Question

If 20% of the science students at Central High study on physics, 25% study chemistry and the rest study only biology, what is the smallest number of science students who could be studying biology?

Answer 1

5.5% is the smallest cuz u add 20 + 25= 45 and that minus 100 is 55 so then u divide it by the biggest number which is 10 and that equals 5.5. However, if it has to be a whole number then it would be 55 divided by 5 which would equal 11. Hope that helps