Question

Jerry is mowing his lawn. It takes him 1/6 of an hour to mow 3/20 of his yard. What portion of the yard does Jerry mow per hour.

Answer 1

$\frac{1}{6} \times 60 = 10$
1/6 of an hour = 10 mins

10 mins : 3/20
60 mins : x

$10 x = \frac{3}{20} \times 60 \\10x = 9 \\ x = \frac{9}{10}$

Answer : Jerry mows 9/10 of the yard per hour.

Hope this helps. - M