Jack took a test and got 10 out of 20 points. He took a make-up test and got 20 out of 25 points.
The percent of increase in Jack's score is about _____.
Jack's test (convert it into a percent): 10/20 x 5 = 50/100 = 50%
20/25 x 4 = 80/100 = 80%
Subtract: 80% (Make up test) - 20% (Real/Original test) = ___%!
I hope this will help!
Remember that if a fraction is 'out of 100', that mean 'percent' (%)!
(split it up!: per = out of, cent = 100!)