Question

marta completed 50 problems in 80 minutes. At this rate , How many problems will Marta complete in 120 minutes ?

Answer 1

75 problems

Explanation:

You would use cross multiplication you you set up the problem like this:

50/80 = x/120

you would cross multiply to get 80x=6,000

then you would divide each side by 80

6,000/80= 75