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77julia77 [94]
3 years ago
12

Please help asap please

Mathematics
1 answer:
Rama09 [41]3 years ago
5 0

Answer:

144 = 64 + 20x

144 = 64 + 20x

144 - 64 = 20x

80 = 20x

<u>4 = x</u>

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The book store is having a sale where all hardcover books are 20% off. Jamie also has a coupon for 15% off any fiction book. Jam
scoray [572]

You can use the fact that both 20% and 15% discounts will be merged to reduce 35% of the price of the book that Jamie buys.

By buying the book on sale and using the coupon, Jamie will save

Option B: $11.55

<h3>
How are discounts calculated for the case when its sale and we've got discount coupons too?</h3>

Suppose the sale gives p% off.

And the discount coupon provides q% off.

Then we have total discount applied on the cost of the object bought as

(p+q)%

<h3>How to find the percentage from the total value?</h3>

Suppose the value of which a thing is expressed in percentage is "a'

Suppose the percent that considered thing is of "a" is b%

Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).

Thus, that thing in number is

\dfrac{a}{100} \times b

<h3>Using the above fact to calculate the amount that Jamie saved </h3>

Since the sale offers 20% discount and Jamie has got 15% discount coupon for any fiction book, thus, total 35% will be discounted if Jamie buys fiction book.

Since the price of the fiction book that Jamie brought is $32.99, thus,

Saved amount = 35% of $32.99 = \dfrac{32.99}{100} \times 35 = 0.3299 \times 35 \approx \$11.55

Thus,

By buying the book on sale and using the coupon, Jamie will save

Option B: $11.55

<h3 />

Learn more about percentage here:

brainly.com/question/11549320

5 0
2 years ago
A radio station is giving away concert tickets to every 60th collar and a concert T-shirt to every 45th color what will be the n
Ludmilka [50]

Answer:

180th caller

Step-by-step explanation:

45 * 4 = 180

60 * 3 = 180

180 is the LCM

6 0
3 years ago
An item costs c dollars and 6% sales tax is charged... You are buying a skateboard that costs $75. What is the cost of the skate
slamgirl [31]
$75 ×6 %
=$75×6/100
=$4.5
$75+ $4.5
=$79.5
7 0
3 years ago
Read 2 more answers
How is subtracting a
Aleks [24]
Because when you subtract a negative number the signs cancel out and become and addition problems
4 0
3 years ago
Read 2 more answers
20=v+9-16 <br><br><br>20=v+9+ ( )<br><br><br>20=v-<br><br><br> =v
DIA [1.3K]

Answer:

v = 27

Step-by-step explanation:

20 = v + 9 - 16

20 = v + (9 - 16)

20 = v - 7

v = 27

4 0
2 years ago
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