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In a 10 km race, A, B and C each running at uniform speed get the gold, silver and bronze medals respectively. If A beats B by 1 km and B beats C by 1 km, then by how many meters does A beat C?

Solution

✅ Correct Option: 3

When A covers 1010 km, B covers 99 km.

When B covers 1010 km, C covers 99 km, so when B covers 99 km, C covers 9×910=8.19\times\dfrac{9}{10} = 8.1 km.

Hence A beats C by 10−8.1=1.910-8.1 = 1.9 km =1900= 1900 m.

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