Question

For every 5 red stickers there are 7 blue stickers on a sticker sheet. How many blue stickers are there if the sheef has 144 stickers in all

Answer 1

84

Explanation:

Ratio of red:blue = 5: 7

That means if there are 12 stickers total, 5 will be red and 7 will be blue

The ratio of red:total is 5:12 which can be represented as 5/12

The ratio of blue:total is 7:12 which can be represented as 7/12

So, if there are 144 stickers

Number of blue stickers = 7/12 x 144 = 7 x 12 = 84