Answer:
Fraction of the shop speakers are blue t-shirts that are on sale and are size medium =
![(1)/(8)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/10623hfejiuv6jjmsy616ofg8s2f18tnhk.png)
Explanation:
Let T be the number of T shirts in the shop.
Three fifths of the t-shirts in a T-shirt shop are blue.
![\texttt{Number of blue t shirts = }(3)/(5)T](https://img.qammunity.org/2019/formulas/mathematics/middle-school/jgnw2hmvbzfhfxcbla9pe4lcft62qfh9os.png)
5/8 of those blue t shirts are on sale,
![\texttt{Number of blue t shirts that are on sale = }(5)/(8)* (3)/(5)T=(3)/(8)T](https://img.qammunity.org/2019/formulas/mathematics/middle-school/vwedh6d2i9npaxu24qwm33wvxhb42nfb3d.png)
1/3 of the blue t-shirts that are on sale are size medium,
![\texttt{Number of blue t shirts that are on sale with size medium = }(1)/(3)* (3)/(8)T\\\\\texttt{Number of blue t shirts that are on sale with size medium = }=(1)/(8)T](https://img.qammunity.org/2019/formulas/mathematics/middle-school/dccj63xv469f3xjf7eg5p2tiul8o5ae7om.png)
Fraction of the shop speakers are blue t-shirts that are on sale and are size medium =
![(1)/(8)](https://img.qammunity.org/2019/formulas/mathematics/middle-school/10623hfejiuv6jjmsy616ofg8s2f18tnhk.png)