Question

The water level in ricky lake changes at an average of -7/48 inch for 1 year.Based on the rate above how much will the water level change after 5 years?Show your calcutations.

Answer 1

we are given

The water level in Ricky lake changes at an average of -7/48 inch for 1 year

It means that

In 1 year , the water level changes at $\frac{-7}{48} inches$

and we have to find the water level change after 5 years

so, we can multiply both sides by 5

In 5*1 year , the water level changes at $5*\frac{-7}{48} inches$

In 5 years , the water level changes at $\frac{-35}{48} inches$

Hence,

the water level change after 5 years is $\frac{-35}{48} inches$........Answer