There are 209 7th graders this year. This is a 5% decrease from last year. How many 7th graders were there last year?

220

Step-by-step explanation:

okay, so 209 7th graders this year

since there was a 5 percent decrease from last year, 209 is 95 percent of the 7th graders from last year

so then we can set up a proportion

209/0.95=x/1

we can cross multiply

0.95x=209

x=220

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*