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Marizza181 [45]
3 years ago
7

The difference of two numbers is 8. When twice the first number is added to three times the second number, the result is 51. Wha

t are the two
numbers?
OA.
12 and 4
ОВ.
15 and 7
Ос.
20 and 12
OD
23 and 15
Mathematics
1 answer:
Naya [18.7K]3 years ago
8 0
The answer is b. 15 & 7
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podryga [215]

Answer:

  • 35%

Explanation:

<u>1. Cost of each liter of yellow paint:</u>

Yellow paint is sold in 5 litre tins and ach tin costs £26, thus the cost of one liter is £26 / 5 liters = £5.2 per liter.

<u>2. Cost of each liter of blue paint:</u>

Blue paint is sold in 10 litre tins and each tin costs £48, thus the cost of one liter of blue paint is £48 / 10 liters = £4.8 per liter

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Green paint is made by mixing yellow paint and blue paint in the ratio 2:3

Thus, 5 liters of green paint will cost:

2 liters yellow paint: 2 liter × £5.2 / liter = £10.4

3 liters blue paint:     3 liter × £4.8 / liter = £14.4

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5 liters green paint:   5 liter                        £24.8

Cost of one liter of gree paint: £24.8 / 5 liter = £4.96 / liter

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Percentage profit = profit per liter / cost per liter × 100

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Step-by-step explanation:

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