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30 Apr 2006, 07:05
Kudos
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A bag of coins contains only nickels, dimes and quarters.There are 38 coins in all.What is the total value of all the coins in the bag?
1)Quarters aacount for half the value of the coins in the bag
2)The value of all the dimes equals the value of all the nickels.
The question doesnt specify the value of each type of coin,howver in the solution they hav taken some value of each type of coin.
How am I supposed to know the value of each kinda coin, also if such coins are specific to ne country's currency...Can such questions be asked in GMAT, in which international students mught not be aware of the value of such type of coins?
1)Quarters aacount for half the value of the coins in the bag
2)The value of all the dimes equals the value of all the nickels.
The question doesnt specify the value of each type of coin,howver in the solution they hav taken some value of each type of coin.
How am I supposed to know the value of each kinda coin, also if such coins are specific to ne country's currency...Can such questions be asked in GMAT, in which international students mught not be aware of the value of such type of coins?
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01 May 2006, 13:38
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itishaj
from i,
1 qt = 2 dime + 1 nickel = 3 coins
1 qt = 1 dime + 3 nickels = 4 coins
1 qt = 5 nickels = 5 coins
hmmmmmmmmmm............ didn't work
finally, using trail and error,
i got : 8 qtrs + 10 dimes + 20 nickels = $4.00
01 May 2006, 13:42
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itishaj
solve for the following system of equations:
(1) Q + N + D = 38
(2) 0.25Q - 0.05N - 0.1D = 0
(3) 0.1D-0.05N = 0
remember quaters are 25 cents
dimes 10 cents
nickels 5 cents
I am too lazy now to check the system of equations but we have three equations, 3 variables, so my answer would be C, please double check
