Register
At a bake sale, David bought 3 tarts and 5 cookies, and paid $10.50. At the same prices, Lisa bought 4 tarts and 8 cookies, and paid $14.80. What was the price of a tart and the price of a cookie?
219k views
8 votes
At a bake sale, David bought 3 tarts and 5 cookies, and paid $10.50. At the same prices, Lisa bought 4 tarts and 8 cookies, and paid $14.80. What was the price of a tart and the price of a cookie?

User Max Podgorny
by
7.8k points

1 Answer

10 votes
T = Tarts
C = Cookies

David:
3T + 5C = 10.50

Lisa:
4T + 8C = 14.80

Setup as system of equations and use substitution or elimination

Elimination is easier for this case but either will give you the right answer I worked it both ways

T= cost of tarts = $2.50
C= cost of cookies = $0.60
At a bake sale, David bought 3 tarts and 5 cookies, and paid $10.50. At the same prices-example-1
User Onassis
by
8.8k points
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

8.8m questions

11.4m answers

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement  how thick must the cement be to cover field
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
Link Copied!