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vitfil [10]
3 years ago
15

Jason went shopping.

Mathematics
2 answers:
Anvisha [2.4K]3 years ago
8 0
If u r not interested in the explanation jump to the end ***

1. We assume, that the number 53.55 is 100% - because it's the output value of the task. 
2. We assume, that x is the value we are looking for. 
3. If 53.55 is 100%, so we can write it down as 53.55=100%. 
4. We know, that x is 15% of the output value, so we can write it down as x=15%. 
5. Now we have two simple equations:
1) 53.55=100%
2) x=15%
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
53.55/x=100%/15%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 15% of 53.55

53.55/x=100/15
(53.55/x)*x=(100/15)*x       - we multiply both sides of the equation by x
53.55=6.6666666666667*x       - we divide both sides of the equation by (6.6666666666667) to get x
53.55/6.6666666666667=x 
8.0325=x 
x=8.0325
*******
now we have: 
15% of 53.55=8.0325.
the total price was 53.55+8.0325=61.5825 the price before the discount
61.5825 - 38 = 23.5825 ~ 23.58
Contact [7]3 years ago
4 0

Answer:

£25

Step-by-step explanation:

In this question, we are asked to calculate the amount that a discounted purchase cost before the discount was applied.

From the question, we were made to know that 53.55 included the discount. Now if 15% was the price of the discount, this means what she paid was 85% and this is equivalent to the value 53.55

since we do not know the total price before the discount, let’s call that x.

This means that;

85/100 * x = 53.55

85x = 53.55 * 100

85x = 5355

x = 5355/85

x = £63

Now we were made to know that the trainers were priced at £38 before the discount, the price of the watch before the discount is thus £63 - £38 = $25

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Digiron [165]

Hello!

Since we are given that the speed of sound in the air travels about 343 meters per second, we can multiply 343 meters per second by 5, and then we convert the meters to kilometers.

343 · 5 = 1715 meters per 5 seconds.

1000 meters are equal to 1 kilometer. So, we can divide 1715 by 1000 to convert meters to kilometers.

1715 / 1000 = 1.715

Therefore, the speed of sound in air is about 1.715 kilometers per 5 seconds.

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Based on your distance from the state border and the cruise control speed, the minimum and maximum hours you will have cruise control on is:

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<h3>How long will cruise control be on?</h3>

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This means that you might put it off in:

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.........

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