5 people can write 25 book in 20 days working 8 hour a day . then in how many day 125 can be written by 75 people ?
"work per day epr hour per person = 25 / ( 20 * 8 * 5 ) / / eq - 1 people = 75 ; let suppose day = p ; per day work for 8 hours acc . to condition work per day epr hour per person = 125 / ( p * 8 * 75 ) / / eq - 2 eq - 1 = = eq - 2 ; p = 20 / 3 answer : c"
divide(multiply(25, 20), divide(75, const_2))