Kelley and Stuart each have a sweet tooth and bought candy at the same store. Kelley spent $2.65 for 15 Sour Keys and 2 Mars bars. Stuart bought 3 Mars bars and 10 Sour Keys for $3.35. What was the cost of a Mars bar? (Hint: The equation for Kelley's purchases is: 15S + 2M = 2.65

Kelley and Stuart each have a sweet tooth and bought candy at the same store. Kelley spent $2.65 for 15 Sour Keys and 2 Mars bars. Stuart bought 3 Mars bars and 10 Sour Keys for $3.35. What was the cost of a Mars bar? (Hint: The equation for Kelley's purchases is: 15S + 2M = 2.65

Intermediate Algebra

19th Edition

ISBN:9780998625720

Author:Lynn Marecek

Publisher:Lynn Marecek

Chapter4: Systems Of Linear Equations

Section4.3: Solve Mixture Applications With Systems Of Equations

Problem 4.51TI: Translate to a system of equations and solve: Greta wants to make 5 pounds of a nut mix using...

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Question

19 of 22
Kelley and Stuart each have a sweet tooth and bought candy at the same store. Kelley spent $2.65 for 15 Sour Keys and 2 Mars
bars. Stuart bought 3 Mars bars and 10 Sour Keys for $3.35. What was the cost of a Mars bar?
(Hint: The equation for Kelley's purchases is:
15S + 2M = 2.65
First determine the equation for Stuart's purchases, and then solve the system of equations using matrices.)
O $0.90 for a Mars bar
O $0.95 for a Mars bar
O $1.05 for a Mars bar
O $1.25 for a Mars bar

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