Solve.
-If Jon can paint the fence in 3 hours and Karen can paint it in 6 hours, find how long it takes them to paint it together.
A) $2 \mathrm { hr }$
B) $3 \mathrm { hr }$
C) $1 \frac { 1 } { 2 } \mathrm { hr }$
D) $4 \frac { 1 } { 2 } \mathrm { hr }$

Question

Quizplus · Accepted Answer

Jon's rate is 1/3 fence per hour, and Karen's rate is 1/6 fence per hour. Together, their rate is 1/3 + 1/6 = 1/2 fence per hour, so it takes them 2 hours to paint the fence together.

Solve -If Jon Can Paint the Fence in 3 Hours 2hr2 \mathrm { hr }2hr

Solve
-If Jon Can Paint the Fence in 3 Hours $2 \mathrm { hr }$