Question

If Lily got 18 questions right on a 20 questions

test, what percentage of the questions did she
get wrong?

Answer 1

10%

Explanation:

18/20 Questions = 0.9 or 90% she got right

2/20 Questions = 0.1 or 10% she got wrong

Answer 2

She got 10% of the questions wrong !

Explanation:

To solve this problem I used cross multiplication

`(x)/(100)= (18)/(20)`

18 x 100 =1800

1800 / 20 = 90

Since they are asking what she got wrong, not what she got right, you just need to subtract.

100% - 90% = 10%

hope this helped !