SOLUTION: You have $2.90 in change made up of only pennies, dimes and nickels. You have twice as many dimes as nickels and twice as many pennies as dimes. How many pennies, dimes and nickel

SOLUTION: You have $2.90 in change made up of only pennies, dimes and nickels. You have twice as many dimes as nickels and twice as many pennies as dimes. How many pennies, dimes and nickel

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Question 244495: You have $2.90 in change made up of only pennies, dimes and nickels. You have twice as many dimes as nickels and twice as many pennies as dimes. How many pennies, dimes and nickels do you have?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!

let n=nickels d=dimes and p=pennies
5n+10d+1p=290
2n=d
n=d/2
2d=p
5(d/2)+10d+2d=290
5d+20d+4d=580
29d=580
20=d=dimes
n=10
40=p
check
20*10+10*5+40(1)=290
200+50+40=290

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