Question

Theresa bought 18 postcards during 6 days of vacation. If she buys postcards at the same rate, after 9 days of vacation, how many total postcards will Theresa have bought?

Answer 1

36

Explanation:

you just devide 18 by 6, which was three, then you multiply from there up to 9, which gives you 36 ( that probably made no sense, im bad at math )