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

Multiple Choice

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) $4 \frac { 1 } { 2 } \mathrm { hr }$