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  1. In a race of 200 metres, B can give a start of 10 metres to A, and C can give a start of 20 metres to B. The start that C can give to A, in the same race, is
    1. 30 metres
    2. 25 metres
    3. 29 metres
    4. 27 metres
Correct Option: C

According to the question,
∵  When B runs 200 m metres, A runs 190 metres
∴  When B runs 180 metres, A runs

=
190
× 180 = 171 metres
200

When C runs 200m, B runs 180 metres.
Hence, C will give a start to A by
= 200 – 171 = 29 metres



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