Question

17.5% of 120 can be worked out using the following method find 10% of 120=12 then 5% of 120=6 then 2.5% of 120=3. Adding 17.5% of 120=21. Use the method above to work out 17.5% of 360

Answer 1

17.5% of 360 = 63

Explanation:

We are given a process of finding 17.5% of 120. Following the same process we have to determine the 17.5% of 360.

17.5% can be break down as 10% + 5% + 2.5%

Thus,

STEP 1 : Find 10% of 360 , we get,

`(10)/(100) * 360=36`

STEP 2 : find 5% of 360, we get,

`(5)/(100) * 360=18`

STEP 3: find 2.5% of 360 , we get,

`(2.5)/(100) * 360=9`

STEP 4: 17.5% of 360 = 10% of 360 + 5% of 360 + 2.5% of 360

⇒ 17.5% of 360 = 36 + 18 + 9

⇒ 17.5% of 360 = 63