Question 200385: Multiple Choice: Use the given information to answer.
Sam has 7 more cassettes than Naomi. Together they have 19 cassettes.
Let c = number of cassettes that Naomi has. In terms of c, how many cassettes does Sam have?
c + 19 c + 7
c + 5
In terms of c, how many cassettes do Sam and Naomi have together?
3c + 19
3c + 7
2c + 7
Choose an equation based on the information, in terms of c, for how many cassettes Sam and Naomi have together.
2c + 7 = 19 c = 19
c + 7 = 12
How many cassettes does Naomi have?
6 4
13
How many cassettes does Sam have?
6 4
13
Answer by RAY100(1637)   (Show Source):
You can put this solution on YOUR website! The multiple choice section is confusing, but perhaps this will help
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Let ,,,S = # Sam has, C = # Naomi has
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(1) S + C = 19,,,,,,total of 19
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(2) S = C +7,,,,,,,,,Sam has 7 more than Naomi
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from (1) C = 19-S
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substitute in (2)
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S = (19-S) +7
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2S = 26
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S=13,,,,,Answer
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From (1) (13) +C =19,,,,C=6,,,, Answer
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Check in (1) 13=6+7 =13,,,,ok
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In(2) 13 + 6 = 19,,,,,ok
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