Question

Nancy can mow a yard in 3 hours and Peter can mow it in 4 hours. Suppose they both work together, how long would it take to finish?Answer 12/7 hours
1 hour
7/12 hours
7 hours

Answer 1

If person 1 does the work in \(x\), and person 2 does it in \(y\), then they'd take:
\( \color{Black}{\Rightarrow \Large {xy \over x + y} }\)

Answer 2

Did you understand, Hinton?

Answer 3

Yeah I Got It Thanks