Question

A printer has 15 rolls of newsprint in a warehouse. What fractional total will remain (in lowest terms) after 10 rolls are used?
Ms. Sue
If you show us how you think the problem should be solved, we'll be glad to check your work and your answer.
Mike
would it be 10/15
Ms. Sue
You're right as far as you went. :-) Now reduce 10/15 to its lowest terms.
Mike
it would be 2/3
msp
Remember, when you write a fraction is is part/whole. You want to know how many rolls are left so do the subtraction (15 to start with, 10 are used)...this will be your "part" or numerator. The amount you started with will be your "whole" or denominator. You can reduce them by dividing them both by 5.
Ms. Sue
Yay! You're right! :-)
Mike
thank you
Guido
What is a fraction?

part/whole = fraction

10/15 = fraction

5 into 10 = 2 (our numerator)

5 into 15 = 3 (our denominator)

Final answer: 2/3

Done!