Concept explainers
A shopper purchased 8 T-Shirts and 5 pairs pants for $220. The next day, he purchased 5 T-shirts and 1 pair of pants for $112. How much does each T-shirt and each pair of pants cost?
To find: The cost of each T-shirt and each pair of pants.
Answer to Problem 16P
The cost of each T-shirt is $20 and the cost of each pair of pants is $12.
Explanation of Solution
Given information:
The cost of each T shirt and each pair of pants cost when a shopper purchased 8 T-shirts and 5 pairs of pants for $220. The next day, he purchased 5 T-shirts and 1 pairs of pants for $112.
Calculation:
Let us assume the cost of each T-shirt is x and the cost of each pair of pants is y .
Hence we can write the above statement in equation form as follows:
In order to solve two systems by substitution, we solve one of the equations for one of the
Variables, and plug this into other equation.
As it is given that
Now we substitute
By plugging
Therefore the solution is
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