<PRE><B>Question 958582</B>
N=nickels; Q=quarters=3N
$0.05N+$0.25Q=$5.60 Substitute for Q.
$0.05N+$0.25(3N)=$5.60
$0.05N+$0.75N=$5.60
$0.80N=$5.60 Divide each side by $0.80.
N=7 ANSWER 1: There are 7 nickels
Q=3N=3(7)=21 ANSWER 2: There are 21 quarters.
CHECK:
$0.05N+$0.25Q=$5.60
$0.05(7)+$0.25(21)=$5.60
$0.35+$5.25=$5.60
$5.60=$5.60</PRE>