TS ICET 2015 Question Paper with Solutions for online practice

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The letters in the English alphabet are coded in the reverse order. For example, A is coded as Z, B is Coded as Y,....

Following this code answer the questions from 56 to 60.

Question : 72 of 200

Marks: +1, -0

A car travels from A to B at a speed of 24 kmph and returns from B to A at a speed of 40 kmph. What is the average speed of the car for the whole journey (in kmph) ?

Validate

Solution:

When two equal distances are covered at speed

V_1

and

V_2

, then for the total journey,
Average Speed

={2V_1V_2}/{V_1+V_2}={2×24×40}/{24+40}=30

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