Question:
R and S start walking towards each other at 10 am at speeds of 3 km/hr and 4km/hr respectively. They were initially 17.5km apart. At what time do they meet?
A11.30 AM
B2.30 PM
C1.30 PM
D12.30 PM
Answer:
D. 12.30 PM
Explanation:
Suppose they meet after x hours. Then 3x+4x=17.5 7x17.5 x=2.5 hours. So they meet at 12.30 PM