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Ivenika [448]
3 years ago
7

Madame Dubois bought 20 pearl necklaces for $500. Becoming bored quickly, she sold 3/4 of them at $40 each. She sold the rest at

cost price. How much money did she make?
Mathematics
2 answers:
matrenka [14]3 years ago
8 0

<u>Find cost of 1 necklace:</u>

20 necklaces = $500

1 necklace = $500 ÷ 20 = $25



<u>Find Sales of 3/4 of the necklaces:</u>

3/4 of 20 = 3/4 x 20 = 15 necklaces

15 necklaces sold at $40 each = 15 x 40 = $600



<u>Find Sales of the remaining necklaces:</u>

20 - 15 = 5

5 necklaces sold at $25 = 5 x 25 = $125



<u>Find profit:</u>

Total Sales = $600 + $ 125 = $ 725

Total profit made = $725 - $500 = $225



Answer: She made $225

Serjik [45]3 years ago
4 0

$725


3/4 of 20 = 15 necklaces

15 x 40 = 600


The rest:

5 x 25 = 125


125 + 600

= 725



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Answer:

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Step-by-step explanation:

The order of the digits and of the letters is important. For example, ABC is a different configuration than CBA. So we use the permutations formula to solve this question.

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The number of possible permutations of x elements from a set of n elements is given by the following formula:

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In this question:

3 digits from a set of 10(there are 10 digits from 0 to 9).

3 letters from a set of 26. So

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T = P_{(10,3)} \times P_{(26,3)} = \frac{10!}{(10-3)!} \times \frac{26!}{(26-3)!} = 11232000

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5 0
3 years ago
11. The student council is comparing prices for their semi-formal dance. They compare banquet. Hall A charges $40 per person. Ha
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Answer:

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Step-by-step explanation:

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4 0
3 years ago
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Vika [28.1K]

Answer:

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7 0
3 years ago
18 is 0.4 of what because i dont know
Tamiku [17]

'is' means equals
'of' means mutily so
we have
18 =0.4 times what
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45=what
the answer is the number is 45
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