Question

On a test consisting of 80 questions, Susan answered 75% of the first 60 questions correctly. What percent of the other 20 questions does she need to answer correctly for her grade on the entire exam to be 80%?

Answer 1

wouldn't that be 95%

Answer 2

46.8?

Answer 3

oops i meant
what is \(75\%\) of \(60\) ?

Answer 4

hah was confused for a second

Answer 5

45

Answer 6

ok 45
and what is \(80\%\) or \(80\) ?

Answer 7

*of

Answer 8

64

Answer 9

k so she got 45 right and needs to get 64 right, or another 19 i guess

Answer 10

and
\[\frac{19}{20}=.95=95\%\] lol what you said ages ago!

Answer 11

i got she needs 19 more, so that would be \[\frac{ 19 }{ 20 } = \frac{ x }{ 100 }\]

Answer 12

1900x = 20 x = 95