Question

A and B together can do a piece of work in 9 days. if A does thrice the work of B in a given time, A alone can finished the work in ....days.

Answer 1

Answer:

Step-by-step explanation:

A+B=9

B=A/3

A+A/3=9

4A/3=9

4A=27

A=27/4

A=6.75days