it takes 2 team of farm workers 12 days to completely prepare a piece of land for planting . if both team of workers were to work separately , one of them can complete the work 10 days earlier than the other , how many days will it take each of them to separately complete the work ?
work = ( a ) ( b ) / ( a + b ) where a and b are the individual times of each entity . here , we ' re told that ( working together ) the two team of workers would complete a job in 12 days . this means that ( individually ) each of team would take more than 12 days to do the job . answers d , a and b are illogical , since the individual times must both be greater than 12 days . so we can test the values for answers c and e . using the values for answers b and d . . . answer b : ( 15 ) ( 25 ) / ( 15 + 25 ) = 375 / 40 = 9.4 this is a match answer e : ( 20 ) ( 30 ) / ( 20 + 30 ) = 12 final answer : e
add(subtract(subtract(add(multiply(add(multiply(10, 12), multiply(10, 2)), 10), multiply(multiply(10, 12), 10)), add(multiply(add(const_3, const_4), const_10), const_100)), multiply(add(multiply(10, 12), multiply(10, 2)), 10)), multiply(10, const_100))