David bought three DVDs and four books for $40 at a yard sale. Anna bought one DVD and six books for $18. how much did each DVD

Question

Zigmanuir [339]

3 years ago

8

David bought three DVDs and four books for $40 at a yard sale. Anna bought one DVD and six books for $18. how much did each DVD

and book cost ?

Mathematics

1 answer:

Dvinal [7] · Answer 1 · 2022-05-06T00:58:20+03:00

Answer: Anna bought 1 DVD and 6 books for $18. How much did each DVD and book cost? ... Your equations (2 unknowns and two equations, d is for a DVD and b is ... For Anna: d+6b=18 ... Combined equation: −14b=−14 and b=1 (means that each book worths $1). Now for DVD price,

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