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- A is 2 1/3 times as fast as B.
Question 1:
A is 2 1/3 times as fast as B. If A gives B a start of 80 m, how long should the race course be so that both of them reach at the same time? A. 170 metre
B. 150 metre
C. 140 metre
Feedback Speed of A : Speed of B = 7/3 : 1 = 7 : 3
It means, in a race of 7 m, A gains (7-3)=4 meter
If A needs to gain 80 metre, race should be of 7/4×80 = 140 metre
It means, in a race of 7 m, A gains (7-3)=4 meter
If A needs to gain 80 metre, race should be of 7/4×80 = 140 metre
D. 160 metre
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