Question

After a winter storm, the depth of the snow on Cherry Street was

10 cm. But then, the snow started melting at a rate of 1/3 cm per hour.
What was the depth of the snow on Cherry Street after 3 hours?

Answer 1

Answer: The depth of the snow on Cherry Street after 3 hours will be 9 cm.

Explanation:

After a winter storm, the depth of the snow on Cherry Street was 10 cm.

The snow started melting at a rate of 1/3 cm per hour.

So, after 3 hours the snow meted =
`(1)/(3)*3=1` cm

Hence, the depth of the snow on Cherry Street after 3 hours will be =
`10-1=9` cm

Answer: The depth of the snow on Cherry Street after 3 hours will be 9 cm.

Answer 2

In the beginnig, the depth of the snow on Cherry Street was 10cm .

And it started melting at a rate of 1/3 cm per hour.

It means after 1 hour, the height is 10-(1/3) , after two hours the height is 10-(2/3) . So after three hours, the depth of the snow on Cherry Street will be

`image`

Therefore the answer is 9 cm .