Question

A bag is filled with green and blue marbles. There are 41 marbles in the bag. If there are 15 more green marbles than blue marbles, find the number of green marbles and the number of blue marbles in the bag.

Answer 1

Let the number of blue marbles be: x

So,
x+15=41
Therefore,
x=41-15 (transpose)
x=36

So the number of blue marbles are 36.