Lori can do 42 push-ups. this is ten less than twice the amount of push-ups her sister can do. how many push-ups can her sister do?

a) 24

b) 18

c) 16

d) 26

All we have to do is minus 42 and 10 since it says 10 less which would give us 32 than we divided it by 2 since it says twice the amount which would give us 16

So the answer is C. 16