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He has a total of 85 cards and is selling each basketball card for $5 and each baseball card for $3. He hopes to make a total of $315. How many baseball cards and basketball cards does he have in his collection

Respuesta :

ntowry

Answer:

30 basketball cards

55 baseball cards

Step-by-step explanation:

set up a system of equations

b + c = 85

5b + 3c = 315

use substitution

c = 85 - b

5b + 3(85-b) = 315

5b +255 -3b = 315

2b = 60

b = 30

c = 85 - 30 = 55

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