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allochka39001 [22]
3 years ago
6

One day you went to the Three dollar store. Of course all items you chose were $3. This store is a city with no sales tax on foo

d, but an 5% tax on non food items. You paid the bill of $34.05. How many of each type of item did you buy?
Mathematics
1 answer:
scoundrel [369]3 years ago
6 0

Answer:

I buy 4 food items and 7 non-food items from the store.

Step-by-step explanation:

The food items in the store are sold at $3 each and the non-food items are sold at $3 plus 5% tax.

So, the cost of each non-food items will be 3(1 + \frac{5}{100}) = 3.15 dollars.

If we consider that I buy 1 food item, then I buy $(34.05 - 3) = $31.05 of non-food items which is not a multiple of $3.15.

If I buy 2 food items, then I buy $(31.05 - 3) = $28.05 of non-food items which is again not a multiple of $3.15.

If we consider that I buy 3 food items, then I buy $(28.05 - 3) = $25.05 of non-food items which is again not a multiple of $3.15.

If I buy 4 food items, then I but $(25.05 - 3) = $22.05 of non-food items which is finally a multiple of $3.15 as (3.15 × 7) = 22.05.

Therefore, I buy 4 food items and 7 non-food items from the store. (Answer)

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A cone with volume 246 ft cubic if the height is 15 find the radius
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Answer:

r = 3.95 ft

Step-by-step explanation:

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2 years ago
Aysha has 40 cubes in a bag.
marissa [1.9K]

Given:

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Blue cubes = 13

Yellow cubes = 9

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The probability now that she will take a red cube is 0.5.

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The probability that she will take a yellow cube.

Solution:

Let Aysha adds x red cubes into the bag. Then,

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Probability of getting a red cube is:

P(Red)=\dfrac{18+x}{40+x}

The probability now that she will take a red cube is 0.5. So,

\dfrac{18+x}{40+x}=0.5

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x-0.5x=20-18

0.5x=2

Divide both sides by 0.5.

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