Zack is 15 years old. This is three years younger than his brother Louis. How old is Louis?
18
200
14=s+7
7
200
-4j=36
-9
200
h/-3 = 12
-36
200
-5w = -24.5
4.9
200
Last week Tiffany practiced her bassoon a total of 7 hours. This was two hours more than the previous week. How many hours did she practice the previous week?
5
300
s-8=9
17
300
-12y=60
-5
300
-30 = x/-5
150
300
2/5 t = 12/25
6/5 or 1 1/5
300
Brandy wants to buy a digital camera that costs $300. If she saves $15 each week, in how many weeks will she have enough money for the camera?
20
400
r+6= -3
-9
400
-16 = -4s
4
400
-8 = c/-10
80
400
24/16 = 3/4 a
8/4 or 2
400
The average growth per month of a human hair is 0.5 inch. How long does it take for hair to grow 3 inches?
6 months
500
-2 = p-13
11
500
36 = -9r
-4
500
r/20 = -2
-40
500
-1/2 g = -3 1/3
20/3 or 6 2/3
500
Jocelyn has nine yards of fabric to make table napkins for a senior citizens' center. She needs 3/8 yard for each napkin. How many napkins can she make with nine yards of fabric?