WRITE AN EQUATION & SOLVE: Julie is 3 years older than her sister. Julie's age is 11 years old. How old is her sister?
n - Julie's sister's age
n + 3 = 11
n = 8
Julie's sister is 8 years old.
Ms. Narayan bought 7 Hannah Montana t-shirts for a total of $90.93. Each t-shirt cost the same amount. How many Hannah Montana t-shirts did Ms. Narayan buy?
n - # of t-shirts
7n = 90.93 n = 12.99
Each t-shirt cost $12.99
You bought a magazine for $5 and four erasers. You spent a total of $25. How much did each eraser cost?
e - number of erasers
Equation: 25 - 5 = 4e or 4e + 5 = 25
Answer: e = 5 erasers
Mr. White goes to the grocery store and purchases 17 bags of raisins and a $2.97 jar of peanut butter. His total cost was $34.76. What was the cost for a bag of raisins?
r - cost of a bag of raisins
17r + 2.97 = 34.76
r = 1.87
Each bag of raisins cost $1.87
Karina has 4 boxes of apples. Each box has the same number of apples. After Karina eats 3 apples, there are 109 apples left in the boxes. How many apples were in each box?
a - # of apples in each box
4a - 3 = 109
a = 28
There were 28 apples in each box.