Tshirt sore keeps 7 white t-shirts on the shelves for every 3 purple t- shirts on the shelve how many white t-shirts on the shelve if 15 purple t-shirts on the shelve. show how you get the answer in long form

I think the answer is 35 because:

THE OTHER WAY I DID IT WAS;

I ADDED IT 5 TIMES AND GOT 15

I ADDED IT 5 TIMES AND GOT 35

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.