Walter takes 7/10 of an hour to mow 2/5 of an acre of lawn. At this rate, how many acres will he mow in an hour?

Question

asked Jan 3, 2017 189k views

2 Answers

Stefano Travelli · Answer 1 · 2017-01-03T19:31:53+0000

7/10 times x equals 10. x = 10/7. Now you have to multiply 2/5 by 10/7 as well, which equals 4/7, so he can mow 4/7 of an acre per hour

Dogwasstar · Answer 2 · 2017-01-09T15:10:42+0000

Answer:

$(4)/(7)\ acres$

Explanation:

we know that

Walter takes
7/10 of an hour to mow
2/5 of an acre of lawn

so by proportion

Find how many acres will he mow in an hour

$((7/10))/((2/5))(hours)/(acres)=(1)/(x)(hour)/(acres)\\\\x=(2/5)/(7/10)\\ \\x=(4)/(7)\ acres$