Posted by **Anonymous** on Sunday, September 18, 2011 at 2:23pm.

in a department store, there were a certain number of red t-shirts, blue t-shirts and yellow t-shirts. 3/7 of the t-shirts were red, 1/3 of them were blue, and the rest were yellow. If there were 20 more red t-shirts than blue t-shirts, how many yellow t-shirts were there?

- math -
**Henry**, Tuesday, September 20, 2011 at 6:25am
X = the total # of t-shirts.

3x/7 = the # of red t-shirts.

x/3 = the # of blue t-shirts.

(3x/7-20)=The # of blue t-shirts,also.

x/3 = 3x/7 - 20,

x/3 - 3x/7 = -20,

Multiply both sides by 21:

7x - 9x = -420,

-2x = -420,

X = 210.

3x/7 = 3*210 / 7 = 90 Red t-shirts.

x/3 = 210 / 3 = 70 Blue t-shirts.

Y = 210 - 90 - 70 = 50 Yellow t-shirts.

## Answer This Question

## Related Questions

- math - In a department store, there were a certain number of red T-shirts, blue...
- math !!!! :O - In a department store, there were a certain number of red T-...
- math - in a department sore there are red t-shirts, blue t-shirts, and yellow t-...
- math - Sam has 5 red shirts 2 pink shirts and 3 yellow shirts. If she closed her...
- Math - Andrea has 6 blue shirts, 2 red shirts, and 5 green shirts in her closet...
- math - jessica has 24 shirts .1/6 are red.1/3 are yellow.4/12 are green. the ...
- math - The soccer team ordered 140 T-shirts to sell at the school fair.Oh those ...
- algebra - the student store sells schools supplies,hats,and t-shirts with NAMS ...
- Math - 1.Jake has 10 t-shirts and 5 collared shirts. What is his ratio of t-...
- math - Elizabeth has a box of shirts. one half of the shirts are small, 2/5 of ...

More Related Questions