There are a total of 30 blue and orange marbles in a box. If there are 14 more blue marbles than orange marbles, how many orange marbles are there

Question

how to i get to the answer like explaining it i know it is 8

Answer 1

First take the total marbles, and subtract the extras.

 

Then take that answer and divide by 2, since that amount has equal amounts of each color.

 

That answer tells you what you started with of each color, before the extras of one color were added.