math
posted by Vic .
Bryce has a handful of pennies and nickels.he counts the change and finds 4 times as many pennies than nickels.He has total of 72 cents.How many pennies does he have
Can't find a equation

If x = nickels, 4x = pennies
5(x) + 4x = 72 
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?