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mariarad [96]
3 years ago
8

15. a)

Mathematics
1 answer:
frutty [35]3 years ago
7 0

Answer:

The correct answer is - A)8% B) 3%

Step-by-step explanation:

A) Let assume:

the cost price of the goods - $y.

the selling price of the goods - $x.

Given: The retailer sold at 4% discount, or 0.96x (100% - 4% = 96%). Since the goods were sold to make 20% profit, therefore it was sold for:

1.2y (100% + 20% = 120%).

Solution:

The refrigerator was sold at 13% VAT at Rs. 10848:

then,

=> 1.2y + 13%(1.2y) = 10848

=> 1.2y + 0.156y = 10848

=> 1.356y = 10848

=> y = 8000

Thus, the cp is Rs 8000.

The selling price is:

=> 0.96x = 1.2y

=> 0.96x = 1.2(8000)

=> x = 10000

The sp is Rs. 10000

For a profit of 15%, that is 1.15(8000) = 9200, the discount is:

(1 - discount)10000 = 9200

1 - discount = 0.92

Discount = 1 - 0.92 = 0.08 or 8%

B) Let C & M as cost price & marked price of the scanner machine respectively.  

(1 + 20/100)*C = 41400

or (6/5)*C = 41400

or C = (5/6)*41400

= 34500 (Rs)

(1 - 10/100)*(1 + 15/100)*M = 41400

or (9/10)*(23/20)*M = 41400

or M = (10/9)*(20/23)*41400

= 40000 (Rs)

Let R% as the reduction in the percent in discount  

(1 - 10/100 + R/100)*(1 + 15/100)*M

= (1 + 20/100 + 4/100)*C

or (9/10 + R/100)*(23/20)*40000

= (31/25)*34500

or 9/10 + R/100

= (20/23)(31/25)*(345/400)

or R/100 = 0.93 - 0.9 = 0.03

or R = 3%

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Answer:

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And the area would be:

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Step-by-step explanation:

For this case we know one side of a square given 6mm.

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A = x^2 = 6mm^2 = 36 mm^2

And we know that the drawing has a scale of 1 mm : 7 km and if we convert the perimeter to km we got:

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6 0
3 years ago
I need the answer please. Because I think i got mine wrong
Gekata [30.6K]

Answer:

see explanation

Step-by-step explanation:

Using the rules of exponents

• a^{-m} ⇔ \frac{1}{a^{m} }

• a^{0} = 1

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Given

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Victoria make 80% of her free throws. what is the probability she makes her next two free throws?
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Answer:

64%.

Step-by-step explanation:

That will be the product of each single probability.

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4 0
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. Mr. View is 8 years older than Ms. Sun. In 7 years, the sum of their ages will be 110. How old are they now?​
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Write all of the digits that can replace each 3,408< 3,_30< 3,540
insens350 [35]

Answer:

The digits that can replace are 5 and 4

Step-by-step explanation:

Let

x -----> the digit

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3,408 < 3,X30 < 3,540

Divide into two inequality

<em>Solve for the first inequality</em>

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The digits that can replace X are -----> 5,4,3,2,1,0

<em>Solve for the second inequality</em>

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The solution are all values of X common in both inequalities

therefore

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