Rahul can finish one-fifth of hhis homework in one hour.Neha can finish three-seventh of her homework in one hout thirty minutes and riya can finish three fourth of her homework in three hours thirty minutes.If all of them start their homework at 12:00pm 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 3:30pm for thirty minutes?	Choose the correct option
A) 5.00pm
B) BY 5:30 pm
C) 4.40pm
D) 6.30pm
E) 3.30pm
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 5:30 pmy 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 pmy 5:30 they all go to play   ANSWER:BY 5:30 pm
<result>B</result>
Rahul can finish one-fifth of hhis homework in one hour.Neha can finish three-seventh of her homework in one hout thirty minutes and riya can finish three fourth of her homework in three hours thirty minutes.If all of them start their homework at 12:00pm 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 3:30pm for thirty minutes?