10. Three fifths of the T-shirts in a T-shirt shop are

blue. Five eighths of those T-shirts are on sale.

One third of the blue T-shirts that are on sale are

size medium. What fraction of the shop's T-shirts

are blue T-shirts that are on sale and are size

medium? Explain.

1/8

Step-by-step explanation:

Imagine the value of all of the t-shirts are equal to 1.

3/5 of all of them are blue, so 3/5 of 1 - -> 3/5 * 1 = 3/5

5/8 of the blue tshirts are on sale, so 5/8 of 3/5 - -> 5/8 * 3/5 = 3/8

1/3 of those tshirts are medium, so 1/3 of 3/8 - -> 1/3 * 3/8 = 1/8

So, 1/8 of all of the tshirts are blue, on sale, and medium