Solve
-A Baker Can Decorate the Day's Cookie Supply Four $40 \mathrm {~min}$

Solve.
-A baker can decorate the day's cookie supply four times as fast as his new assistant. If they decorate all the cookies working together in 32 minutes, how long would it take for each of them to decorate the cookies working individually?

A) baker: $40 \mathrm {~min}$
assistant: $160 \mathrm {~min}$

B) baker: $9 \frac { 1 } { 4 } \mathrm {~min}$
assistant: $37 \mathrm {~min}$

C) baker: $160 \mathrm {~min}$
assistant: $40 \mathrm {~min}$

D) baker: $160 \mathrm {~min}$
assistant: $640 \mathrm {~min}$