Question

Nisha wants to study for 5 hours for the spelling bee. If she studys for 1/3 hour per night. How man y nights will she have to study?

Answer 1

If it takes 1/3 of an hour every night we need to find how many thirds are in 5.

We divide 5 by 1/3 which is the same as 5 times 3 which equals 15.

It will take 15 nights to study for 5 hours.

Answer 2

Answer: 15 nights

Explanation:

Given: Duration of study by Nisha for the spelling 'bee'.=5 hours

Rate of her study=1/3 hour per night

Let she studies y hours for the spelling 'bee' then

Rate of her study
`=(5)/(y)` [divide hours of study by 'y' ]

`\\\Rightarrow(5)/(y)=(1)/(3)\\\Rightarrow\ y=5*3\\\Rightarrow\ y=15\ hours`

Hence she has to study 15 nights.