IPMAT Indore 2019Arithmetic > Mediumuv\dfrac{u}{v}vuuv−u\dfrac{u}{v-u}v−uuv−uv+u\dfrac{v-u}{v+u}v+uv−uuv+u\dfrac{u}{v+u}v+uu✅ Correct Option: 3Related questions:A helicopter flies along the sides of a square field of side length 100 kms. The first side is covered at a speed of 100 kmph, and for each subsequent side the speed is increased by 100 kmph till it covers all the sides. The average speed of the helicopter isA boat goes 96 km upstream in 8 hours and covers the same distance moving downstream in 6 hours. On the next day it starts from point A, goes downstream for 1 hour, then upstream for 1 hour, and repeats this for four more times, that is, 5 upstream and 5 downstream journeys. Then the boat would beTwo swimmers, Ankit and Bipul, start swimming from the opposite ends of a swimming pool at the same time. Ankit can cover the length of the pool once in 10 minutes. Bipul can cover the length of the pool once in 15 minutes. They swim back and forth for 80 minutes without stopping. The number of times they meet each other is