15% of x = 21
Set up proportions.
15/100 = 21/x
Cross multiply the numbers (15 by x, 21 by 100).
Divide 2100 by 15x to get x.
2100/15 = 140
X is 140.
The word problem is based on division ratio so u have to divide by five so 100 divided by five is 20 meaning the collector has to sell 20 band posters.
The correct triangle is right
Do 2 hours on each one provided that the weekly allowance is given in which it is so when you multiply the wage by hours (2) and add the weekly allowance you get $28 for each one which is the same.
