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A toy store sells either small dolls or large dolls. If one person buys 6 small dolls and 5 large dolls and spends $65, and another person buys 5 small dolls and 4 large dolls a…
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A toy store sells either small dolls or large dolls. If one person buys 6 small dolls and 5 large dolls and spends $65, and another person buys 5 small dolls and 4 large dolls a…
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Aug 15, 2019
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A toy store sells either small dolls or large dolls. If one person buys 6 small dolls and 5 large dolls and spends $65, and another person buys 5 small dolls and 4 large dolls and spends $53, how much does each type of dolls cost?
Mathematics
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Nick DeFazio
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6 small dolls + 5 large dolls = $65
------------------ (1)
5 small dolls + 4 large dolls = $53
------------------ (2)
(1) x 5 :
30 small dolls + 25 large dolls = $325
------------------ (1a)
(2) x 6 :
30 small dolls + 24 large dolls = $318
------------------ (2a)
(1a) - (2a) :
1 large doll = $7
Substitute 1 large doll = $7 into (1):
6 small dolls + 5(7) = $65
6 small dolls + 35 = $65
6 small dolls = $65 - $35
6 small dolls = $30
1 small doll = $5
Answer: 1 small doll is $5 and I large doll is $7.
Yane
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Aug 17, 2019
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Yane
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each small doll cost 6.5 dollars and each large doll cost 10 dollars
ChuNan
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Aug 22, 2019
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ChuNan
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