Q1. Amar and Akbar start walking in opposite directions. Amar walked 24 km and Akbar walked 7 km. Then Amar turned left and walked 7 km, and Akbar turned right and walked 24 km. How far is each of them from the starting point?
A 27 km
B 25 km Correct
C 26 km
D 31 km
Explanation
Both walkers form a right-angled path from the starting point. Amar first goes 24 km in one direction and then 7 km perpendicular to it after turning left. Akbar first goes 7 km in the opposite direction and then 24 km perpendicular to it after turning right. In each case, the straight-line distance from the start is the hypotenuse of a right triangle: 24 squared plus 7 squared equals 576 plus 49, which is 625. The square root is 25 km.