Races and Games Practice Test 1 with solutions

Question : 9 of 40

Marks: +1, -0

A is

1 1/3

times as fast as B. If A gives B a start of 45 metres, how long should the race course be so that both of them reach at the same time?

Solution:

Course of race Lead =

[1/{1-{\B's \speed}/{\A's \speed}}]

metre
=

45 [1/{1-3/4}]

metre
=

45 [1/{1/4}]

= 45 × 4 metres = 180 metres

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