A can do a work in 10 days. The efficiency of A is 20% less than B. How many days B need to finish the same work?

A can do a work in 10 days. The efficiency of A is 20% less than B. Ho

1.	A can do a work in 10 days. The efficiency of A is 20% less than B. How many days B need to finish the same work?
A.	.5 days
B.	2.3 days
C.	days
D.	.5 days
Answer» D. .5 days