solving system using subsitution
question
a shopper purchased 8 t-shirts and 5 pairs of pants for $220.The next day he purh pair of purchased 5 tshirts and 1 pair of pants for $112.How much does each tshirt and each pair of pants cost? ...?

Respuesta :

Below is the solution:

8t + 5p = 220
5t + p = 112
 
From the second equation:
p = 112 - 5t
 
Replace into first:
8t + 5(112 - 5t) = 220
t = 20


 p = 112 - 5t = 112 - 100 = 12

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