You work at a clothing store, and your boss wants you to find out which type of shirt had the highest percentage of sales. you found that 13 out of 20 tank tops were sold, and 15 out of 25 t-shirts were sold. which percent represents the type of shirt with the greater percentage sold? 15%13%60%65%

Tank tops
13/20 * 100% =1300/20= 65%

t-shirt
15/25 *100%=1500/25=60%

Tank tops

So the first thing we do is to multiply the top equation by 3. the reason i want to do this is i notice there will be a 6y on both equations and can possibly add/subtract them. so we get 6y = -3x + 27. adding that and the second equation we get 6x = 27-15 which is 12. divide by 6 and we get 2. ∴ x = 2. substituting 2 into the first equation we get 2y = -2 + 9 which is 7. divide by 2 and we get 7/2. ∴ y = 7/2, x = 2.