Sally and marta had the same number of postcards. After sally sold 18 of her postcards, marta had 4 times as many postcards as sally. How many postcards did each girl have to begin with?

Answer 1

s = m
(s-18)*4 = m

4s-72 = s
3s = 72
s = 24

they both started with 24
sally sold 18, leaving her with 6. marta then had 4 times that.

Answer 2

a box of chalk and 2 staplers cost ten dollars. three boxes of chalk and two staplers cost eighteen dollars. find the total of one box of chalk and one stappler

Answer 3

18+6=24

24-18=6

6x4=24

They both started off with 24 cards

Answer 4

24