SOLUTION: A bag of coins (nickels and dimes only) is worth $3.20. There are three less than twice as many dimes as nickels. How many of the coins are dimes?
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Question 1169013: A bag of coins (nickels and dimes only) is worth $3.20. There are three less than twice as many dimes as nickels. How many of the coins are dimes? Found 2 solutions by ikleyn, josgarithmetic:Answer by ikleyn(52787) (Show Source):
You can put this solution on YOUR website! .
A bag of coins (nickels and dimes only) is worth $3.20. There are three less than twice as many dimes
as nickels. How many of the coins are dimes?
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For a moment, add mentally three dimes to the collection.
Then you will have $3.50 in total.
And you can group then the coins in sets, containing 2 dimes and 1 nickel in each group.
Each such a group is worth 2*10+5 = 25 cents; so the number of groups is = 14.
From this point, there is only one step to the
ANSWER. 14 nickels and 2*14 - 3 = 25 dimes.
CHECK. 14*5 + 10*25 = 320 cents = $3.20. ! Correct !
You can put this solution on YOUR website! -------------------------------------------------------------------
There are three less than twice as many dimes as nickels.
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