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2 votes
Package A contains 3 birthday cards and 2 thank you notes and costs $18. Package B contains 8 birthday cards and 6 thank you notes and costs $50. If x represents the cost of a birthday card and y represents the cost of a thank you note, how much does each birthday card cost?

2 Answers

3 votes

Answer:

4 dollars

Explanation:

User Shtolik
by
6.0k points
5 votes
3x+2y=18
8x+6y=50


ill give u elimination sub would be hard


elimination: -3(3x+2y=18) multiple bye -3
-9x-6y=-54 6's cancel leaving -x=-4
8x+6y=50

-x=-4 divide bye -1
--------
-1 -1
(x=4)

3(4)+2y=18 substitute 4 into one of the 2 original equations i picked first
12+2y=18 subtract 12
2y=6 divide by 2
y=3
final answer is points (4,3)
User Janki Gadhiya
by
5.9k points