Problema Solution
A man drives to a destination at a rate of 60 mph. He drive back over the same route at a rate of 40mph due to traffic. If the round trip takes two hours, how far is the destination ?
Answer provided by our tutors
let the destination is x mile away
time in journey = x/60
time i return journey = x/40
total time = x/60 + x/40
x/60 + x/40 = 2
=> x(100) = 2*40*60
=> x = 48 miles