Question

You have a box of 50 cookies. 18% of them are sugar cookies. How many cookies in the box are not sugar cookies?

Answer 1

41

Explanation:

first work out how many of the total cookies are 1%. To calculate this, divide the total by 100

50 ÷ 100 = 0.5 (1% of the cookies is 1/2 a cookie)

As 18% of these cookies are sugar cookies, multiply the 1% by 18

0.5 x 18 = 9 (9 of the cookies are sugar cookies)

To work out how many are NOT sugar cookies, subtract the sugar cookies from the total

50 - 9 = 41

∴41 of the cookies were NOT sugar cookies

I hope this helped :-)

Answer 2

41 cookies in the box are not sugar cookies

Explanation:

First, find what percentage of the total cookies aren't sugar cookies. If 18% are, then the amount that aren't is:

100% - 18% = 82%

Since 82% of the cookies aren't sugar cookies, multiply 82% by 50 to find the amount of cookies that aren't sugar cookies:

50 * 82% = 41