AP ICET 2015 Paper

Question : 92 of 200

Marks: +1, -0

A car travels at

8/7

times its usual speed and reaches the destination 15 minutes early. Then the time taken by the car in hours to reach its destination with its usual speed is

2
$1{1/2}$
3
$2{1/2}$

Validate

Solution:

For distance remaining same,

\text "time taken"∝1/\text "speed"

Time taken

=7/8

of usual time [speed is

8/7

of usual speed]

∴(1-7/8)

of usual time = 15 minutes
⇒ Usual time

=15×8=120\min=2\hrs.

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