The table below gives the number of calories burned per minute for someone roller-blading, as a function of the person's weight in pounds and speed in miles per hour [from the August 28,1994, issue of Parade Magazine]. calories burned per minute weight speed 89 10 11 120 4.25.8 7.4 8.9 140 5.16.7 8.3 9.9 160 6.17.7 9.2 10.8 180 7 8.6 10.2 11.7 200 7.99.5 11.1 12.6 (a) Suppose that a 160 lb person and a 180 person both go 8 miles, the first at 10 mph and the second at 9 mph. How many calories does the 160 lb person burn? 16 How many calories does the 180 lb person burn? 20 (b) We might also be interested in the number of calories each person burns per pound of their weight. How many calories per pound does the 160 lb person burn? How many calories per pound does the 180 lb person burn?
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
![The table below gives the number of calories burned per minute for someone roller-blading, as a function of the
person's weight in pounds and speed in miles per hour [from the August 28,1994, issue of Parade Magazine].
calories burned per minute
weight speed 89 10
120
4.25.8 7.4 8.9
140
5.16.7 8.3 9.9
160
6.17.7 9.2 10.8
180
7 8.6 10.2 11.7
200
7.9 9.5 11.1 12.6
(a) Suppose that a 160 lb person and a 180 person both go 8 miles, the first at 10 mph and the second at 9 mph.
How many calories does the 160 lb person burn? 16
How many calories does the 180 lb person burn? 20
(b) We might also be interested in the number of calories each person burns per pound of their weight.
How many calories per pound does the 160 lb person burn?
How many calories per pound does the 180 lb person burn?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F859743d5-9578-4a68-94b4-09f68a5c3500%2F24cff2ff-9c55-46c7-833b-5ac18bf4cd13%2F51kaeuq_processed.png&w=3840&q=75)
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