Question

Find each number. Round to the nearest tenth if necessary

Answer 1

1. 96
2. 6.9
3. 25%
4. 8%
5. 79
6. 33.8

Explanation:

Here is the complete question: Find each number. Round to the nearest tenth if necessary.

1. 80% of 120.
2. 115% of 6
3. What percent of 128 is 32?
4. 3 is what percent of 36?
5. 23.7 is 30% of what number?
6. 71/2% of what is 12?

1) 80% of 120

=
`(80)/(100) * 120= 8* 12`

= 96

∴ 80% of 120= 96

2)
`115\%\ of\ 6`

=
`(115)/(100)* 6= 1.15* 6`

∴
`115\%\ of\ 6` = 6.9

3) What percent of 128 is 32?

=
`(32)/(128) * 100`

=
`25\%`

4) 3 is what percent of 36?

=
`(3)/(36) * 100`

=
`8\%`

5) 23.7 is 30% of what number?

Let the number be "x".

⇒
`(30)/(100) * x= 23.7`

Cross multiplying

⇒
`x= (23.7* 100)/(30)`

∴ x= 79.

6) 71/2% of what is 12?

Lets assume the required number be "x".

⇒
`(71)/(2) * 100* x= 12`

cross multiplying both side.

⇒x= 33.8

∴ 71/2% of 33.8 is 12