5x + 10y + 200 = 5x + 20y
2y = 4x
y = 2x
5x + 20y + 200 = 5x + 40x
200 = 20x
x = 10
Zach saved 10 nickels and 20 dimes for $2.50
Lily saved 10 nickels and 40 dimes = $4.50
Zachary saved x nickels and y dimes last month. Lily saved x nickels and 2y dimes. Lily saved $2 more than Zachary and the total number of her dimes is 4 times the total number of her nickels.
(a) How much coins does Zachary have?
(b) How much did Lily save?
(c) How much did Zachary save?
2 answers
25x^3-55^-60=
2 answers