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Feliz [49]
2 years ago
5

A store sells​ tents, sleeping​ bags, and camp stools. A customer buys a​ tent, 3 sleeping​ bags, and 4 camp stools for ​$170. T

he price of the tent is 9 times the cost of a camp stool. The cost of a sleeping bag is ​$30 more than the cost of a camp stool. Find the cost of each item.
Mathematics
2 answers:
olya-2409 [2.1K]2 years ago
7 0

Answer: the cost of a tent is $45

the cost of a sleeping bag is $35

the cost of a camp stool is $5

Step-by-step explanation:

Let x represent the cost of a tent.

Let y represent the cost of a sleeping bag.

Let z represent the cost of a camp stool.

A customer buys a​ tent, 3 sleeping​ bags, and 4 camp stools for ​$170. It means that

x + 3y + 4z = 170- - - - - - - - - - - - - - -1

The price of the tent is 9 times the cost of a camp stool. It means that

x = 9z

The cost of a sleeping bag is ​$30 more than the cost of a camp stool. It means that

y = z + 30

Substituting x = 9z and y = z + 30 into equation 1, it becomes

9z + 3(z + 30) + 4z = 170

9z + 3z + 90 + 4z = 170

9z + 3z + 4z = 170 - 90

16z = 80

z = 80/16

z = 5

y = z + 30 = 5 + 30

y = 35

x = 9z = 9 × 5

x = 45

Inessa [10]2 years ago
6 0

Answer:

Cost of camp stool is $5 , cost of tent is $45 and cost of sleeping bag is $35

Step-by-step explanation:

Customer buys 1 tent,3 sleeping bags and 4 camp stools.

Let the cost of the camp stool = \[x\]

Then the price of the tent = \[9*x\]

Cost of the sleeping bag = \[x+30\]

The total cost of the items purchased by him is $170

\[=> 9x + 4x + 3(x+30) = 170\]

\[=> 9x + 4x + 3x+90 = 170\]

\[=> 16x = 80\]

\[=> x = 5\]

So cost of camp stool is $5 , cost of tent is $45 and cost of sleeping bag is $35.

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Answer:

7.)

Therefore FT is 33 unit.

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Step-by-step explanation:

7.)

Given:

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<span>Simplifying 25 + 10(12 + -1x) = 5(2x + -7)
25 + (12 * 10 + -1x * 10) = 5(2x + -7)
25 + (120 + -10x) = 5(2x + -7)
 
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145 + -10x = (-7 * 5 + 2x * 5)
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Combine like terms: 10x + -10x = 0 145 + -20x = -35 + 0 145 + -20x = -35
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Combine like terms: 145 + -145 = 0 0 + -20x = -35 + -145 -20x = -35 + -145

Combine like terms: -35 + -145 = -180 -20x = -180
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x = 9
 Simplifying x = 9.
Hope this helps you ! =')</span>
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