Question

Tell whether the rates form a proportion.

7 inches in 9 hours; 42 inches in 54 hours

Answer 1

The rates form a proportion

Explanation:

we know that

If two rates form a proportion

then

The two rates must be equivalent

so

`(7)/(9)=(42)/(54)`

Multiply in cross

`7(54)=9(42)`

`378=378` ----> is true

therefore

The rates form a proportion