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Two siblings, sibling A and sibling B, are saving money for their summer vacation. The amount of money that sibling A has in their savings account, y, can be represented by the equation y = 10x + 25, where x represents the number of weeks. Sibling B's savings can be represented by the equation y = 5x + 50. Based on the graph of this system of linear equations, after how many weeks will their savings accounts have the same amount of money?

A. 2.5 weeks
B. 5 weeks
C. 15 weeks
D. 75 weeks

User Sijo Jose
by
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2 Answers

4 votes
Answer is 5 weeks
A sibling 10x + 25
10(5)+ 25
50+25
= £75
B sibling 5x + 50
5(5)+50
=£75
User Keiton
by
9.0k points
5 votes

Answer is 5 weeks

A sibling 10x + 2510(5)+ 2550+25= £75B sibling 5x + 505(5)+50=£75

User MykelXIII
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7.6k points