Harlan has $44 to buy 7 pairs of socks. Athletic socks cost $5 per pair. Dress socks cost $8 per pair. How many pairs of each can Harlan buy? Also can you please tell me how you solved it.

Respuesta :

a + d = 7......a = 7 - d
5a + 8d = 44

5(7 - d) + 8d = 44
35 - 5d + 8d = 44
-5d + 8d = 44 - 35
3d = 9
d = 9/3
d = 3

a + d = 7
a + 3 = 7
a = 7 - 3
a = 4

Harlan can purchase 4 pair of athletic socks (a) and 3 pair of dress socks (d)