SOLUTION: Javier takes three times as long to do a job as Luis does. Suppose t represents the time it takes Luis to do the job. Then 3t represents the time it takes Javier. How long does it

Question 600021: Javier takes three times as long to do a job as Luis does. Suppose t represents the time it takes Luis to do the job. Then 3t represents the time it takes Javier. How long does it take Javier if Luis takes (a) 30sec? (b) 90 sec? (c) 2 min?. I need help
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Luis's rate of working is
( 1 job ) / ( t sec )
Javier's rate of working is
{ 1 job ) / ( 3t sec )
-----------------
(a)
sec
Javier takes
sec
sec
-----------------
(b)
sec
Javier takes
sec
sec
sec
min
-----------------
(c)
min
Javier takes
min
min
-----------------

RELATED QUESTIONS
Bill takes four times as long to do a job as Jose. Suppose t represents the time it takes (answered by god2012)

The time T to do a job varies inversely as the number of people P working. It takes... (answered by richwmiller)

The time it takes to complete a certain job varies inversely as the number of people... (answered by josgarithmetic)

a& b do a job in 4-days working together. A alone would takes twice as long to do the job (answered by ptaylor)

A father can do a job in a certain cumber of hours. His son takes twice as long as to do... (answered by Alan3354)

Working together, Amy and Bob can complete a job in 12 hours, Working lone, it takes Amy... (answered by josgarithmetic)

Barry can do a certain job in 2 hours, where as it takes Sanchez 3 hours to do the same... (answered by checkley71)

pedro can drive 4 times as fast as luis can ride his bicycle. if it takes luis 3 hrs... (answered by josmiceli)

Rico can drive 2 times as fast as Luis can ride his bicycle. If it takes Luis 2 hours... (answered by josgarithmetic,MathTherapy,addingup)