Question

Sasha can mow 3/5 of an acre of grass in 2.25 an hour. How many acres of grass does Sasha mow per hour?

4/15


.08


8/10


.25

Answer 1

Hello!

Answer:

`\Large \boxed{\sf (4)/(15) }`

Explanation:

→ We want to find how many acres of grass Sasha mows per hour.

→ We know that Sasha can mow 3/5 of an acre of grass in 2.25 an hour.

So we have this table:

`\begin{tabular}{ l c r } Time (hours) & 2.25 & 1 \\\\ Acres of grass & 3/5 & x \\\\ \end{tabular}`

→ To find how many acres of grass Sasha mows per hour, let's calculate x.

→ Let's use the method of the cross:

`\sf x = (3)/(5) * 1 / 2.25 \\\\\\= (3)/(5) / 2.25\\\\\\= (3)/(5) * (1)/(2.25) \\\\\\= (3)/(11.25) \\\\\\= (300)/(1125) \\\\\\\boxed{\sf= (4)/(15) }`

Conclusion:

Sasha mows 4/15 acres of grass per hour.