at the corner store john buys 6 twix and 7 mars bars for $ 13.25. Sally buys 3 Twix and 9 mars bars for $ 12.75. Determine the cost of 5 mars and 2 twix bars

Question

at the corner store john buys 6 twix and 7 mars bars for $ 13.25. Sally buys 3 Twix and 9 mars bars for $ 12.75. Determine the cost of 5 mars and 2 twix bars.

please be clear on the steps

Answer 1

6t + 7m = 13.25

3t + 9m = 12.75

 

7m - 18m = 13.25 - 25.50  ⇒ -11m = -12.25 ⇒ m = $ 1.11

6t + 7.80 = 13.25 ⇒ t = $ 0.91

 

Cost of 5 mars : $ 5.55

Cost of 2 twix : $ 1.82