Interview Q&A / Aptitude

1. In a 1 km race, A beats B by 100 m and B beats C by 100 m. By how many metres does A beat C?

   190 m. When A runs 1,000 m, B runs 900 m. When B runs 1,000 m, C runs 900 m, so when B runs 900 m, C runs 810 m. Hence A beats C by 1,000 - 810 = 190 m.

   IntermediateQuick answer1 min read