Mathematics, 15.11.2019 09:31, Jasten

Hobby shop is selling model cars and model trucks for 50% off this week. at the sale price, you can buy one car and one truck for $13.00. also at the sale price, you can buy 4 trucks and 2 cars for $42.00. what is the sale price and the original price of the model car and the model truck?

Answers: 3

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Answers

answered: Queenashley3232

The truck original price is $16.00 and the car price is $5.00.

The truck sale price is $8.00 and the car price is $10.00.

Step-by-step explanation:

We need to find the original price of the truck (T) and car (C)

Sale price of the truck is 50% so that means it is half the original price.

Now let's see the equations we can come up with there:

At sale price:

$T + C = \$13.00\\\\4T + 2C = \$42.00$

We can solve this through substitution.

Using the first equation, we can come up with an equation for one of the missing variables.

$T + C =\$13.00\\\\C = \$13.00 - T$

We can use this equation on the second one, to solve for one variable. $4T + 2C = \$42.00\\\\4T + 2(\$13.00-T) = \$42.00\\\\4T + \$26.00 - 2T = \$42.00\\\\4T - 2T = \$42.00 - \$26.00\\\\2T = \$16.00\\\\\dfrac{2T}{2}=\dfrac{\$16.00}{2}\\\\T = \$8.00$

The sale price of the model truck is $8.00.

Now can use this on the first equation again.

$T + C = \$13.00\\\\\$8.00 + C = \$13.00\\\\C = \$13.00 - \$8.00\\\\C = \$5.00$

The sale price of the model car is $5.00.

Because it is 50% off on both models, the original price is twice the sale price. So we can solve it by multiplying the sale prices by 2.

Original price of model truck: $8.00 x 2 = $16.00

Original price of model car: $5.00 x 2 = $10.00

answered: Guest

answer:

payment just for service

→

87.12

payment for service including tax

→

94.09

explanation:

service only with 20% tip

→

72.6

(

100

)

87.12

in the opening of the question the word 'service' is associated only with the pretax value.

the closing part of the question asks: how much did she pay for the

service

−−−−−−

so technically the answer is

→

72.6

(

100

)

87.12

however, the intention of the question provider may have been that your answer is to be

87.12

(

100

)

94.09

to 2 decimal places.

payment just for service

→

87.12

payment for service including tax

→

94.09

tony b

mar 21, 2017

answer:

trying to explain it another way

explanation:

service charge

→

72.60

20% tip

100

72.60

14.52

−−−−−−

←

add

87.12

tax

100

87.12

6.97

−−−−−

←

add

94.09

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Hobby shop is selling model cars and model trucks for 50% off this week. at the sale price, you can...