Question

During a drought, the water level of a lake changes `-3 1/5` feet per day. How do you write and solve an equation to find how long it takes for the water to change -16 feet?

Answer 1

It takes `5` days to change water level to `-16` feet

Explanation:

Let `x` be the number of days it takes to change water level to `-16\ \text{feet` when change in water level per day is `-3 1/5\ \text{feet`

`-3 1/5\times x=-16`

`16/5x=16`

`x=16\times 5/16`

`x=5`

Hence, it takes `5` days to change water level to `-16` feet