Marty and Stewart are stuffing envelopes with index cards. They are putting index cards in each envelope. When they are finished, Marty has 15 stuffed envelopes and 4 extra index cards, and Stewart has 12 stuffed envelopes and 6 extra index cards. Write an expression in standard form that represents the number of index cards the boys started with. Explain what your expression means.

Question

Ryan Carrillo

Mathematics

18 February, 06:19

Marty and Stewart are stuffing envelopes with index cards. They are putting index cards in each envelope. When they are finished, Marty has 15 stuffed envelopes and 4 extra index cards, and Stewart has 12 stuffed envelopes and 6 extra index cards. Write an expression in standard form that represents the number of index cards the boys started with. Explain what your expression means.

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Answers (1)

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Twiggy · Answer 1

The required expression is s = m + n

Step-by-step explanation:

Let m be the number of index cards stuffed in the envelopes and n be the number of extra index cards.

Let s be the total number of index cards.

Then, s = m + n represents the number of index cards the boys started with.

For Marty,

He has 15 stuffed envelopes and 4 extra index cards.

So, m = 15, n = 4

Therefore, s = 15 + 4 = 19

Marty started with 19 cards.

For Stewart,

He has 12 stuffed envelopes and 6 extra index cards.

So, m = 12, n = 6

Therefore, s = 12 + 6 = 18

Steward started with 18 cards.