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During a sale at the bookstore​, books sold for ​$4 and magazines sold for ​$3.50. Jan spent ​$29 and bought a total of 8 books and magazines. How many of each did she ​buy?

Respuesta :

Answer:

2 books and 6 magazines

Step-by-step explanation:

4b+3.5m=29

b+m=8

subtract the m from both sides

b=8-m

plug 8-m in for b in the first equation

4(8-m) +3.5m=29

32-4m+3.5m=29

subtract the 32 and combone like terms

-0.5m=-3

divide by .5

m=6

plug 6 on for m in the second equation

b+6=8

subtract 6

b=2

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