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Tju [1.3M]
2 years ago
10

In a baseball card collection, 40% of the cards are worth more than 100$. If 12 cards in the collection are worth more than $100

, how many total baseball cards are in the collection?
Mathematics
2 answers:
Masja [62]2 years ago
8 0
30 Is the answer to your question :)
Helen [10]2 years ago
5 0

Answer:

30

Step-by-step explanation:

12 is 40% of the total number of cards.

12 = 0.4x, where x is total number of cards

/0.4 /0.4

30 = x

30 cards

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Monica [59]

The system of inequalities is:  x\geq 3 and 12x+7y\leq 63

<em><u>Explanation</u></em>

Let x  be the amount of live bait and y  be the amount of natural bait.

As John would like to get at least 3 pounds of live bait, so the first inequality will be:  x\geq 3

Given that, price of live bait is $12 per pound and natural bait is $7 per pound. Also, he only has a budget of $63. That means, he can spend maximum $63

So, the cost for buying x pound of live bait =\$12x and the cost for buying y pound of natural bait =\$7y

Thus, the second inequality will be:  12x+7y\leq 63


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3 years ago
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3 0
2 years ago
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patriot [66]

Answer:

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Step-by-step explanation:

7 0
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nevsk [136]

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