Please solve this question 

Asked by vikasg13.hardware | 28th Jun, 2018, 06:04: AM

Expert Answer:

According to the question a man covers y distance by walking and then returns the same distance by riding in begin mathsize 16px style 3 3 over 4 end stylehours that is 3 hours begin mathsize 16px style 3 over 4 cross times 60 end style = 45 minutes.

Again a man covers 2y distance in begin mathsize 16px style 2 1 half end style hours that is 2 hours and begin mathsize 16px style 1 half cross times 60 end style = 30 minutes by riding both ways.

Therefore one way riding time required by the man is half of that is 1 hour and 15 minutes.

Hence, the time taken up by the man to cover y distance by walking is that is 2 hours and 30 minutes.

Hence, the time required to cover 2y distance by walking by the man is 2y (2 hours 30 minutes.)

Hence, the time required is 5 hours.

 

Answered by Sneha shidid | 29th Jun, 2018, 09:42: AM