Question

How to find the answer and how to solve it and the answer

Answer 1

r for Robert's piece, m for Maria's.

`\frac 1 2 r = \frac 2 3 m`

`r = \frac 4 3 m`

`r + m = 10`

`\frac 4 3 m + m = 10`

`\frac 7 3 m = 10`

`m = (30)/(7)`

`r = \frac 4 3 m = (40)/(7)`

`r - m = (40)/(7)- (30)/(7) = (10)/(7)`

Answer: 10/7 feet

Check: 1/2(40/7) = 20/7, 2/3(30/7) = 20/7. they match, good.

40/7 + 30/7 = 70/7 = 10, good