Question

Ankush and Babulal walk around circular track. They start at 9 a.m. from the same point in the opposite directions. Ankush and Babulal walk at a speed of 3 rounds per hour and 5 rounds per hour respectively. How many times shall they cross each other until 10.30 a.m.?

Answer 1

Answer:

12 times

Step-by-step explanation:

Find the number of times they will cross each other in 1 hour:

Number of times = 3 + 5 = 8 times

Find the number of hours between 9 am to 10.30 am:

9am to 10am = 1 hour

10am to 10.30am = 0.5 hour

Total number of hours = 1.5 hours

Find the number of times they will cross each other:

1 hour = 8 times

1.5 hours = 8 x 1.5 = 12 times

Answer: They will cross each other 12 times.