Problema Solution
Work Time: Justin takes 3 times as long to do a job as Carl does. Suppose t represents the time it takes Carl to do a job. Then 3t represent the time it takes Justin. How long it take Justin if Carl takes (a) 30 sec? (b) 90 sec? (c) 2 min?
Answer provided by our tutors
if Carl takes
(a) 30 sec
Justin will take 3*30 = 90 sec = 1 min 30 sec = 1.5 min.
(b) 90 sec
Justin will take 3*90 = 270 sec = 4 min 10 sec.
(c) 2 min
Justin will take 3*2 = 6 min.