The correct option is B 160 m CB : NH = 800 : 720 and CB : DM = 800 : 576 NH : DM = NH/CB×CB/DM = 720/800×800/576 = 5/4 When NH runs 5 m, DM runs 4 m When NH r ...

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Question

In an 800 m race, if Chota Bheem can give Ninja Hattori a start of 80 m and Chota Bheem can give Doraemon a start of 224 m, then Ninja Hattori can give Doraemon a start of

144 m

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160 m

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216 m

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72 m

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80 m

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Solution

The correct option is B
160 m

CB : NH = 800 : 720 and CB : DM = 800 : 576

NH : DM = $\frac{N H}{C B} \times \frac{C B}{D M} = \frac{720}{800} \times \frac{800}{576} = \frac{5}{4}$

When NH runs 5 m, DM runs 4 m

When NH runs 800 m, DM runs $(\frac{4}{5} \times 800) m$ = 640m

$∴$ NH can give DM a start of 160 m.

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In an 800 m race, if Chota Bheem can give Ninja Hattori a start of 80 m and Chota Bheem can give Doraemon a start of 224 m, then Ninja Hattori can give Doraemon a start of

The correct option is B 160 m CB : NH = 800 : 720 and CB : DM = 800 : 576 NH : DM = NHCB×CBDM=720800×800576=54 When NH runs 5 m, DM runs 4 m When NH runs 800 m, DM runs (45×800)m = 640m ∴NH can give DM a start of 160 m.