Keith has p pennies, n nickels, and d dimes in his pocket. The total number of coins is 9. The expression 0.01p+0.05n+0.10d0.01p+0.05n+0.10d represents the value of the coins, which is equal to $0.53. He has two fewer nickels than dimes. How many pennies does Keith have?

Keith has _____ pennies.

3 answers

forget all those decimal points.

p+n+d = 9
p+5n+10d = 53
n = d-2

now just solve for p.

Nans

I don't know help