Problema Solution
It Takes Two Window Cleaners Two Hours To Clean The Windows Of A Two Story Building. How Many Hours Would It Take Four Window Cleaners To Clean The Windows Of A Four Story House?
Answer provided by our tutors
2 window cleaners clean 2 story building in 2 hours
4 window cleaners clean 2 story building in 2/(4:2) = 2/2 = 1 hour
4 window cleaners clean 4 story building in 1*(4/2) = 1*2 = 2 hours
Four window cleaners clean the windows of a four story house in 2 hours.