Red and grey bricks were used to build a decorative wall. the number of red bricks over the number of grey bricks was 5/. there were 224 bricks used in all. how many red bricks were used?

To solve this question you put the number of red bricks over the number of total bricks. The new ratio would be 5/7. Then, you use proportions. 5/7 = x/224. 7x=1120. To get x you divide by 7 on both sides. x=160