Question

last year the depth of the river was 4.2 feet deep.This year it dropped 22%Find the depth of the river this year to cross it.

Answer 1

Given:

Depth of river last year = 4.2 feet

It dropped 22% this year.

Let's find the depth of the river this year.

We have:

`\begin{gathered} 4.2\text{ }\ast\text{ 22\% } \\ \\ =\text{ 4.2 }\ast\text{ }(22)/(100)=\text{ }0.924 \end{gathered}`

The depth this year is:

4.2 - 0.924 = 3.276 feet

Therefore the depth of the river this year is 3.276 feet deep

ANSWER:

3.276 feet