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If 100 envelopes cost 70 cents, how much would 250 cost?

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Final answer:

To find out how much 250 envelopes would cost, set up a proportion using the given information that 100 envelopes cost 70 cents. Cross-multiply and solve for the unknown cost, which is $1.75.

Step-by-step explanation:

To find out how much 250 envelopes would cost, you can use the concept of proportions. Since 100 envelopes cost 70 cents, you can set up a proportion to find the cost of 250 envelopes: 100/70 = 250/x, where 'x' represents the unknown cost. Cross-multiplying, you get 100x = 70 * 250. Dividing both sides by 100, you find that x = 175.

Therefore, 250 envelopes would cost 175 cents.

In decimal form, 175 cents is equal to $1.75.

User Arka Ghosh
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The concept that can be used in order to determine how much would 250 envelopes cost is the concept of ratio and proprtion. The equation that would allow us to determine the cost is,

100 envelopes / 70 cents = 250 envelopes / x

The value of x from the equation is 175.
User Perror
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