. What's the total number of pennies, nickels, and quarters Saniyah has?

Question

Sinyah has 18 pennies. she has 4 more nickels than pennies. She has 4 more quarters than nickels.

Answer 1

let p = pennies, n = nickels, and q = quarters

p + n + q = x

Here's what we know:

p = 18

n = p + 4

q = n + 4

 

Since we have our values, let's put them into our equation:

18 + (p + 4) + (n + 4) = x

18 + 18 + 4 + ((p + 4) + 4) = x

18 + (18 + 4) + ((18 + 4) + 4) = x

 

Now we just add them up all together:

18 + 18 + 4 --> 20 + 20 = 40

18 + 4 + 4 --> 20 + 6 = 26

40 + 26 = x

66 coins in total