Question

2. A and B start running on a circular path in opposite directions at 12 PM. They meet at a point when A has completed 70% of the lap. If A returns to the starting point at 1 PM
when does B return to the starting point?
0 2:40 PM
2:25 PM
O 3:00 PM
02:20 PM​

Answer 1

Answer:

3.00 pm....

Step-by-step explanation:

................

Answer 2

Given:

A and B start running on a circular path in opposite directions at 12 PM.

To find:

when does B return to the starting point

Solution:

It is given in the question that:

When A and B meet on the circular path at that point A has covered the 70% of the track while B has covered the 30% of the track.

The time taken to complete the round by A is 1 hour that is 60 minutes.

• 100 % = 60 minutes
• 1% = 60/100
• 70% = 6×70/10
• 70% = 42 minutes

so the same time taken will be taken by the B to complete the 30% of the track

• 30% = 42 minutes
• 1% = 42/30
• 100% = 42×100/30
• 100% = 140 minutes

Means 2 hour and 20 minutes

So,

B return to the starting point at 2:00 PM