Question

The first bricklayer can build a wall in 15 days. the second bricklayer can build the same wall in 10 days. how long will it take them to build the wall together?

i really need help.

Answer 1

around 8 4/7 days is what it takes

Answer 2

6 days

Explanation:

1/T1 + 1/T2 = 1/TotalTime

Builder one is 1/15

Builder two is 1/10.