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?

To solve this problem, we can set up a system of equations.

Let's assume Bryce has x pennies and y nickels.

From the problem statement, we know the following information:
1. Bryce has 4 times as many pennies as nickels, so x = 4y.
2. He has a total of 72 cents, which can be represented as 0.01x (the value of x pennies) + 0.05y (the value of y nickels). So, 0.01x + 0.05y = 72.

Now, we can substitute the expression for x from the first equation into the second equation to get a single equation with only y as the variable:
0.01(4y) + 0.05y = 72.
0.04y + 0.05y = 72.
0.09y = 72.
y = 72 / 0.09.
y = 800.

Substituting this value back into the first equation to solve for x:
x = 4(800).
x = 3200.

So, Bryce has 3200 pennies.