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Yuki888 [10]
3 years ago
13

Jeremy got a haircut and paid 15% as a tip. What percent of the cost did Jeremy pay the barber, including the tip?

Mathematics
1 answer:
Bezzdna [24]3 years ago
5 0

The percentage of the cost that Jeremy will pay including the tip paid is<u> 115% </u>of the cost.

Assuming the cost was $100 and Jeremy gave a 15% tip. The total he would pay is:

= 100 + tip

= 100 + (100 x 15%)

= $115

In percentage this is:

= 115/100 x 100%

= 115%

In conclusion, Jeremy would pay 115% of the tip.

<em>Find out more at brainly.com/question/22444616. </em>

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A 25% acid solution must be added to a 40% solution to get 240 liters of 30% acid solution. How many of each should be used ?
schepotkina [342]

Answer:

The number of liters of 25% acid solution = x = 160 liters

The number of liters of 40% acid solution = y = 80 liters

Step-by-step explanation:

Let us represent:

The number of liters of 25% acid solution = x

The number of liters of 40% acid solution = y

Our system of Equations =

x + y = 240 liters....... Equation 1

x = 240 - y

A 25% acid solution must be added to a 40% solution to get 240 liters of 30% acid solution.

25% × x + 40% × y = 240 liters × 30%

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We substitute 240 - y for x in Equation 2

0.25(240 - y)+ 0.4y = 72

60 - 0.25y + 0.4y = 72

Collect like terms

- 0.25y + 0.4y = 72 - 60

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x = 240 liters - 80 Liters

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The number of liters of 25% acid solution = x = 160 liters

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5 0
3 years ago
Chatty made this square picture. She wants to glue yarn around the border to make a frame. How much yarn does she need?
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Answer:

60 inches

Step-by-step explanation:

s = 15 in

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Hope that helps!!

Please mark as Brainliest!!

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