Research two grocery stores to find prices for the following items. Document your findings in the table.
Grocery Store #1 Price Grocery Store #2 Price
Head of lettuce
Gallon of milk
A dozen eggs
A pound of apples
Frozen pizza
Answer the following questions:
Write an expression to find the cost of 2 pounds of apples and 1 head of lettuce from grocery store #1.
Write an expression to find the cost of 2 pounds of apples and 1 head of lettuce from grocery store #2.
If you have $20 to spend, can you buy 3 dozen eggs and a frozen pizza from either store? Which one(s)?
How many whole gallons of milk can you buy for $14 at each store? Remember, you can’t buy part of a gallon. Write and solve an equation to find your answer.
If you have $32 to spend, how many pounds of apples can you buy with a gallon of milk at each store? Write and solve an equation to find your answer.
Write your own problem similar to question 5 and then write and solve the equation showing how you got the answer.
Here is an example of how the table could be formatted:
Item | Grocery Store #1 Price | Grocery Store #2 Price
---|---|---
Head of lettuce | $1.99 | $2.49
Gallon of milk | $3.49 | $3.99
A dozen eggs | $2.99 | $2.79
A pound of apples | $1.49 | $1.99
Frozen pizza | $5.99 | $6.49
1. Expression for the cost of 2 pounds of apples and 1 head of lettuce from grocery store #1:
Cost of 2 pounds of apples + Cost of 1 head of lettuce = (2 * 1.49) + 1.99
2. Expression for the cost of 2 pounds of apples and 1 head of lettuce from grocery store #2:
Cost of 2 pounds of apples + Cost of 1 head of lettuce = (2 * 1.99) + 2.49
3. To determine if you can buy 3 dozen eggs and a frozen pizza with $20 at each store, calculate the total cost at each store:
Grocery Store #1: (3 * 2.99) + 5.99
Grocery Store #2: (3 * 2.79) + 6.49
Compare the total cost at each store to see if it is less than or equal to $20.
4. To find out how many whole gallons of milk you can buy for $14 at each store, divide $14 by the price of a gallon of milk at each store:
Grocery Store #1: $14 / $3.49
Grocery Store #2: $14 / $3.99
Round down the result to the nearest whole number.
5. To determine how many pounds of apples you can buy with a gallon of milk at each store when you have $32, subtract the cost of a gallon of milk from $32, and then divide the remaining amount by the price of a pound of apples at each store:
Grocery Store #1: ($32 - $3.49) / $1.49
Grocery Store #2: ($32 - $3.99) / $1.99
Round down the result to the nearest whole number.
6. Example problem: How many cans of soda can you buy with 2 pounds of apples at each store when you have $25?
Expression for the number of cans of soda you can buy with 2 pounds of apples at grocery store #1: (2 * $1.49) / Price of a can of soda
Expression for the number of cans of soda you can buy with 2 pounds of apples at grocery store #2: (2 * $1.99) / Price of a can of soda