Races and Games Practice Test 1 with solutions

Question : 39 of 40

Marks: +1, -0

X’ runs

2 1/4

times as fast as ‘Y’. If ‘X’ gives a start of 70 m, how far must the winning post be so that it will be a dead heat race?

Solution:

Ratio of speed of X and Y = 9 : 4
Thus in a race of 9 m, X gains 5 m over Y.
5 m are gained in a race of 9 m.
70 m are gained in a race of

9/5 × 70

= 126 m.

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