<PRE><B>Question 1162226</B>
d = no. of dimes
n = no. of nickels
:
Write an equation for each statement
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Sue has $1.60 in dimes and nickels.
.10d + .05n = 1.60
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 If she has 7 more dimes than nickels, 
d = n + 7
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In the first equation replace d with (n+7)
.10(n+7) + .05n = 1.60
distribute .1
.10n + .70 + .05n = 1.60
.15n = 1.60 - .70
.15n = .90
n = .90/.15
n = 6 nickels
:
You can find the no. of dimes. (d = 6 + 7)
Check your solutions in the 1st equation
:
how many of each coin does she have?</PRE>