Skyler buys 8 T-Shirts and 5 hats for $220. The next day, he buys 5 T-shirts and 1 hat for $112. Use the system of equations from Part A to find the cost of each T-shirt and each hat.

Respuesta :

Answer:  12 hats and 20 T-shirts.

Step-by-step explanation:

Since Let T represents the number of T-shirt and H represents the number of hats,

Then according to the question,

Skyler buys 8 T-Shirts and 5 hats for $220

That is, 8T + 5H =220 ---------(1)

The next day, he buys 5 T-shirts and 1 hat for $112.

That is, 5T + H = 112 -------(2)

Where, the equation (1) and (2) together shows the given situation.

Now, 5 × equation (2),

We get, 25 T + 5 H = 560 ------(3)

equation (3) - equation (1)

17 T = 340,

⇒ T = 20

Again by equation (2),

h = 112-100=12

Thus, the total number of T-shirt = 20 and the total number of hats = 12

The price of one T-shirt is $20, and the price of 1 hat is $12.

Let us assume the cost of 1 T-shirt is $x and the cost of 1 hat is $y.

Skyler buys 8 T-Shirts and 5 hats for $220

Thus,

8x+5y=220      ---------(1)

The next day, he buys 5 T-shirts and 1 hat for $112.

Thus,

5x + y = 112        -------(2)

Now, solve the system of equations by substitution method.

[tex]5x+y=112\\y=112-5x[/tex]

Substitute the value of the y in equation (1) and solve for x.

[tex]\begin{aligned}8x+5(112-5x)&=220\\-17x+560&=220\\-17x&=-340\\x&=20 \end{aligned}[/tex]

Substitute the value of x in equation (2) and solve it further.

[tex]5 \times 20 +y =112\\y=112-100\\y=12[/tex]

Thus, the price of one T-shirt is $20, and the price of 1 hat is $12.

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