15 people can write 90 book in 20 days working 7 hour a day.then in how many day 240 can be written by 72 people?
Answers
A) 240/9 B) 309/28 C) 100/9 D) 200/9 E) 339/26
work per day epr hour per person= 90/(20*7*15) // eq-1   people= 72; let suppose day=p; per day work for 8 hours   acc. to condition   work per day epr hour per person= 240/(p*7*72) // eq-2   eq-1==eq-2;   p= 100/9   ANSWER:100/9
<result>C</result>
15 people can write 90 book in 20 days working 7 hour a day.then in how many day 240 can be written by 72 people?