A car service charges customers a flat fee per ride (which is higher during rush hour traffic) plus charges for each minute and each mile. Suppose that, in a certain metropolitan area during rush hour, the flat fee is $2, the cost per minute is $0.30 and the cost per mile is $1.40. Let x be the number of minutes and y the number of miles. At the end of a ride, the driver said that the passenger owed $20.40 and remarked that the number of minutes was three times the number of miles. Find the number of minutes and the number of miles for this trip. Complete the equation that represents the total cost of the ride. 0.30x+1.40y+2 = 20.40 (Do not include the $ symbol in your answer. Do not simplify. Use integers or decimals for any numbers in the equation.) Complete the equation that represents the relationship between the number of minutes and number of miles. x+ =0 (Do not simplify. Use integers or decimals for any numbers in the equation.)
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.
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