SOLUTION: A car travels at an average speed of 60 km/h from town A to town B .if the car travels at an average speed of 72 km/h instead ,it would reach Town B 15 minutes earlier .calculate t
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-> SOLUTION: A car travels at an average speed of 60 km/h from town A to town B .if the car travels at an average speed of 72 km/h instead ,it would reach Town B 15 minutes earlier .calculate t
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Question 1175717: A car travels at an average speed of 60 km/h from town A to town B .if the car travels at an average speed of 72 km/h instead ,it would reach Town B 15 minutes earlier .calculate the distance between town A and town B Answer by ikleyn(52775) (Show Source):
Let d be the distance between the cities.
Write the "time" equation
- = of an hour (which is 15 minutes)
To solve it, multiply both sides by 360 (LCM of numbers 60, 72 and 4). You will get
6d - 5d = 90
d = 90.
ANSWER. The distance is 90 kilometers.
CHECK. = = = of an hour. ! Correct !
