Question 1002508
x=pennies
140-x=nickels
0.01x+(0.05)(140-x)=4.20
multiply both sides by 100
x+700-5x=4.20
-4x=-280
x=70
140-x=70
There are 70 of each
70 nickels are $3.50
70 pennies are $0.70
$4.20