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Tanzania [10]
2 years ago
9

PLEASE HELP THIS Q IS ON A QUIZ ABOUT RATIO AND PROPORTION

Mathematics
1 answer:
sergij07 [2.7K]2 years ago
5 0

We want to see which offer is the best one to buy 40 batteries, by using algebra we will see that the best offer is offer-B

<h3>How to find the best offer?</h3>

Here we just need to see which would be the cost of 40 batteries which each offer.

For offer-A, a pack of 4 costs £2.52 and we have 1/3 off.

For 40 batteries the cost will be 10 times the above quantity, we get:

10* £2.52 =  £25.20

But there is a 1/3 off, so the cost would be 2/3 of the above quantity:

£25.20*(2/3) = £16.80

For offer-B we know that a pack of 5 costs £2.75, so you need to buy 8 of these. And for each 3 you get one free, so you need to buy 6 (and get 2 free ones). The cost of 6 of these is:

6*£2.75 = $16.50

From this, we can conclude that offer-B is the best one.

If you want to learn more about algebra, you can read:

brainly.com/question/8120556

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204 ft^2

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Enter the value for x that makes the equation true <br> 36(x-5)=9x-18
s2008m [1.1K]

Answer:

x = 6

Step-by-step explanation:

Solve for x:

36 (x - 5) = 9 x - 18

Expand out terms of the left hand side:

36 x - 180 = 9 x - 18

Subtract 9 x from both sides:

(36 x - 9 x) - 180 = (9 x - 9 x) - 18

36 x - 9 x = 27 x:

27 x - 180 = (9 x - 9 x) - 18

9 x - 9 x = 0:

27 x - 180 = -18

Add 180 to both sides:

27 x + (180 - 180) = 180 - 18

180 - 180 = 0:

27 x = 180 - 18

180 - 18 = 162:

27 x = 162

Divide both sides of 27 x = 162 by 27:

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27/27 = 1:

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