You go to the doctor and he gives you 12 milligrams of radioactive dye. After 24 minutes, 8 milligrams of dye remain in your system. To leave the doctor's office, you must pass through a radiation detector without sounding the alarm. If the detector will sound the alarm if more than 2 milligrams of the dye are in your system, how long will your visit to the doctor take, assuming you were given the dye as soon as you arrived? Give your answer to the nearest minute. You will spend minutes at the doctor's office.

Q: Joan is 32 years old. Joan is twice as old as Kim was when Joan was as old as Kim is now. How Old is…

A:

Q: Two pools are being filled with water. To start, the first pool contains 1300 liters of water and…

A:

Q: One canned juice is 15% orange juice; another is 5% orange juice. How many liters of each should be…

A: Given One canned juice is 15%  orange juice another is 5% orange juice

Q: A total of $6000 is invested, part of it at 4.25% and the rest at 5.75%. Thetotal interest after one…

A: Let $x was invested in 4.25% and (6000-x) in 5.75%  So the total interest earned is: 4.25% of x +…

Q: Two types of carbonated drinks are to be mixed. One of them contains 1% sugar, and the other…

A:

Q: In the lab, Sam has two solutions that contain alcohol and is mixing them with each other. He uses 3…

A: Given that Sam has two solutions that contain alcoha

Q: you have 6,128 grams of a radioactive kind of indium. If it's half life is 2 hours, how much will be…

A: We can use exponential decay function to solve the problem

Q: Due to the worsened economy, merchants in downtown Hollywood cannot afford to replace their outdoor…

A: Given that , Light bulbs burn out every month = 13% Outside store lights = 1 million = 1000000

Q: Gabriel is 46 years younger than krystal.5years ago, krystal's age was 3times Gabriel's age. How old…

A:

Q: Suppose Elizabeth takes a 700 mg dose of ibuprofen and every hour that passes the amount of…

A:

Q: A garden watering bucket has 3000 milliliters of water in it, but there is a hole that is leaking 18…

A: Given  bucket has water = 3000 ml every minute leaking water = 18 ml

Q: The number of participants in the orientation program doubles in size each day and it covers an…

A: Topic = Algebra

Q: A plumber has some pure lye and wants to add it to 1 quart of 50% lye. If the plumber needs 60% lye,…

A: Given pure lye added to 1 quart of 50% lye. To find how much pure lye should be added to make 60%…

Q: A chemist needs to mix a solution that is 34% silver nitrate with one that is 4% silver nitrate to…

A: A chemist needs to mix a solution that is 34% silver nitrate with one that is 4% silver nitrate to…

Q: ichard invests $275.04 every month into his 401k.  At the end of 30 years, he has a balance of…

A: Richard invests $275.04 every month. At the end of 30 years, he has a balance of $182,086.68.

Q: Left on together, the cold and hot water faucets of a certain bathtub take 5 minutes to fill the…

A:

Q: If he reduces his caloric intake to 200 kcals/day and walks at 3mph with 10% grade on the treadmill…

A: given target weight is 187 lb.  And currently weight 220 lbs  We have to find how many weeks would…

Q: The Angel fish at the zoo requires the 288 gallon tank to be 3% salt. After a period of time, some…

A: The Angel fish at the zoo requires the 288 gallon tank to be 3% salt. After a period of time, some…

Q: you have 100 pesos today and on each of the following days, you save double the amount of money you…

A: Given query is to find the amount after 10 days .

Q: The manager of a gardening center needs to mix a plant food that is 13% nitrogen with one that is…

A:

Q: Mr Teo had thrice as many apples as Mr Chew. After Mr Teo had sold 154 apples and Mr Chew had sold…

A: We want to find number of apples having Mr Teo and Mr Chew.

Q: With two reapers operating, a field can be harvested in 1 h. If only the newer reaper is used, the…

A: Time taken by both the reapers working together is 1 h. Thus, work done by both the reapers is,…

Q: The tank can be filled with water from two taps. The first tap fills the empty tank in 2 hours less…

A:

Q: Harriet’s main pump can empty the pool in 15 hours while the backup pump can emptythe pool in 26…

A:

Q: Dilbert invests a total of $17,000 in two accounts. The first account earned an annual interest rate…

A: Let y be the amount invested at the intrest rate 3%

Q: A store sells cashews for $6.00 per pound and peanuts for $1.00 per pound. The manager decides to…

A:

Q: Maria invests a total of $17,500 in two accounts. The first account earned an annual interest rate…

A: Maria invest a total of P=$17,500. Let Maria invested x money in the first account (13%) and…

Q: One custodian cleans a suite of offices in 5 hours. When a second worker is asked to join the…

A:

Q: A pot of 180-degree water is placed in a freezer that is set to 20 degrees. The water cools to…

A:

Q: We have 25 days of school left how many weeks of school is that?

A:

Q: The bank of France sells U.S dollars ($) at a rate of ($1.40)/(€1) and buys U.S dollars at a rate of…

A: We want to find how many U.S dollars will Sandra receive in exchange for €36. So, use that the bank…

Q: Ten years ago, the population of Northern Cascadia was 20% smaller than the population that of…

A:

Q: when you were a freshman, there were 350 students in your class. in recent years, only 4 out of 7…

A: Total number of student in class: 350

Q: Samuel can clean the house in 4 hours. Mya can clean the same house in 3 hours. How long would it…

A:

Q: An inlet pipe on a swimming pool can be used to fill the pool in 47 hours. The drain pipe can be…

A: Assume volume of the pool be x. Volume filled by Inlet pipe PI in 47 hours = x So volume filled by…

Q: A crime-scene investigator has 3.4 ounces of a sample. He needs to conduct four tests that each…

A: Definition used -          Remaining sample = Total sample - used sample

Q: . Ravi belongs to a health club. He works out on the rowing machine every 4 days and on the weight…

A:

Q: A certain substance can cool itself from 103°C to 70°C in 15minutes. If the air’s temperature is…

A:

Q: A steel ball is heated to 120°C and then immersed in a vat of water kept at a constant temperature…

A:

Q: indy can construct 100 identical boxes in two days less than Carl. If they work together, they can…

A: Definition used -               If A completes work in x days and B completes work in y days.…

Q: The puffer fish at the zoo requires the 156 gallon tank to be 2% salt. After a period of time some…

A: We will how many gallons of water is required to bring the salinity back down to 2 % as following.

Q: An experiment calls for a 5% salt solution. Only a 3% salt solution and an 8% salt solution are…

A: An experiment calls for a 5% salt solution. Only a 3% salt solution and an 8% salt solution are…

Q: A recipe calls for 2 tsp of salt, 4 tsp of pepper and 1 tsp of garlic powder. How much pepper and…

A: Given, A recipe calls for 2 tsp of salt, 4 tsp of pepper and 1 tsp of garlic powder  We have to find…

Q: 2.) A water tank can be filled by an intake pipe in 12 hours. A draining pipe can empty the water…

A: We need to find how long will it take to fill the tank.

Q: You have 2 empty unmarked jugs: an 8 liter and a 3 liter. Using those jugs and a water faucet, how…

A: Given, 8 litre jug and a 3 litre jug We need to produce exactly 4 litre of water

Q: After spending $2200 of his savings on an iPad, Daniel spent 1/4 of his remaining savings on a…

A: NOTE: Refresh your page if you can't see any equations. . let Daniel has x dollars After spending…

Q: As the biologist for a certain crocodile farm, you know that its carrying capacity is 20,00…

A: Given information: The capacity of the farm is 20,000 crocodiles. The initial release is 5000…

Q: A manufacturer has 600 litres of a 12% solution of acid. How many litresof a 30% acid solution must…

A: Let x litres of 30% acid solution must be added So the total amount of the solution= 600+x litres…