Question

Rahul can finish one-fifth of his homework in one hour. Neha can finish three- seventh of her homework in one hour thirty minutes and riya can finish three fourth of her homework in three hours thirty minutes. If all of them start their homework at 12.00 p.M. And can go to play as soon as they all finish their homework, when can they start to play, if they take a break at 3.30 p.M. For thirty minutes?

Answer 1

Answer:

Step-by-step explanation:

Solution 1: Let the work be 1

Then Rahul do 1/5 work in 60min

So Rahul do 1 work in 300 min

Then Neha do 3/7 work in 90min

So Neha do 1 work in 210min

Then Riya do 3/4 work in 210min

So Riya do 1 work in 280 min

By 300min i.e 5hr all will complete their work so

12-1,1-2,2-3,3-3:30, 4-4:30,4:30-5:30

By 5:30 they all go to play .

Hope this will help you.

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