SOLUTION: Lillian has 14 coins in her wallet. They coins total $1.30. She has twice as many dimes as quarters and twice as many nickels as dimes. How many quarters , dimes and nickels does
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-> SOLUTION: Lillian has 14 coins in her wallet. They coins total $1.30. She has twice as many dimes as quarters and twice as many nickels as dimes. How many quarters , dimes and nickels does
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Question 997907: Lillian has 14 coins in her wallet. They coins total $1.30. She has twice as many dimes as quarters and twice as many nickels as dimes. How many quarters , dimes and nickels does she have ???
thank you
You can put this solution on YOUR website! q+d+n= 14
0.25q+0.10d+0.05n= 1.30
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1/2d= q (twice as many dimes means 1/2 the dimes = quarters)
2d= n
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Let's clarify and continue. We have:
d= d
1/2d= q
2d= n
1/2d+d+2d= 14
3.5d= 14
d= 4 There are 4 dimes, (1/2d= q= 4/2=2)2 quarters, and (2d= 4*2=8)8 nickels
Proof
4*0.10= 0.40
2*0.25= 0.50
8*0.05= 0.40
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Total.....1.30 We have the correct answer
