Question

Sergio got 80% on his math test. If he answered 24 questions correctly, how many questions where on his test?

Answer 1

$x-\ all\ questions\\\\ 80\%x=24\\\\ 0.8x=24\ \ \ \ | divide\ by\ 0.8\\\\ x=30 \\\\ There\ were\ 30\ qestions.$

Answer 2

x- all questions x-80 x-0.8| divide by 0.8 x-30 30 questions were on the test.