Marlo uses 252 lb of gravel to cover a garden plot of 36 ft2. How many pounds of gravel does it take to cover one square foot? H

Question

1 month ago

7

ow large an area could be covered with 315 lb of gravel?

1 answer:

babunello [11.8K] · Answer 1 · 2026-03-26T15:44:28+03:00

The amount of gravel and the area it covers are examples of ratios.

A weight of 7 lb can cover 1 square foot, while 315 lb can cover an area of 45 square feet.

The relevant parameters are:

$252\ lb= 36ft^2$

To find the number of pounds needed for 1 square foot , perform the following calculation:

$x = 1ft^2$

Thus, we have:

$x = 1ft^2$

$252\ lb= 36ft^2$

Cross multiply

$x \times 36 = 252 \times 1$

And divide both sides by 36

$x = 7lb$

The area that 315 lb of gravel can cover is calculated as follows:

So, we have:

$315lb = y$

Cross multiply

$252\ lb= 36ft^2$

$y \times 252 = 36 \times 315$

And divide both sides by 252

$y \times 252 = 11340$

Thus, 7 lb will cover

1 square foot $y = 45$ , and 315 lb will encompass an area of

45 square feet.