SOLUTION: A sum of money amounting to $5.50 consists of dimes and quarters. If there are 28 coins in all, how many are quarters?
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Question 864623: A sum of money amounting to $5.50 consists of dimes and quarters. If there are 28 coins in all, how many are quarters?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
dimes x numbers
quarters 28-x numbers
10x+ 25(28-x)= 550 cents
10x+700-25x=550
-15x=-150
/-15
x=10
dimes 10 coins
quarters 18 coins
CHECK
10*10+18*25= 100 + 450=550
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