A: The distance covered by the cycle in the first hour is 12 km. The distance covered by the boat in the first hour is 10 km. Thus, the difference between the two is 12 - 10 = 2 km. The second friend will return to A in 2 - 4 = 8 hours. The answer is (C).
Answer the following multiple choice question with options (a), (b), (c), (d), (e) by reasoning step-by-step.
Q:There is a road beside a river. Two friends started from a place A, moved to a temple situated at another place B and then returned to A again. One of them moves on a cycle at a speed of 12 km/hr, while the other sails on a boat at a speed of 10 km/hr. If the river flows at the speed of 4 km/hr, which of the two friends will return to place A first? Answer Choices: A)5.4 km /hr B)7.2 km /hr C)8.4 km/hr D)9.6 km /hr E)None