Question

Q1-I have twice as many 5c coins as 20c coins. The total value of all my 5c and 20 c coins is $4.50.
How many 5c coins do I have?
Q2-. I have 20 coins consisting of 5c and 20c coins. The total value of the coins is $2.05. How many
of each kind do I have?
Please answer, Thanks!

Answer 1

lets retry that, sorry, this time keep it in cents, not dollars (lats equations i posted in a mix of both... my bad
Q1.
5x + 20y = 450
2x = y

now try, should get more reasonable results this time ;P

Answer 2

still a bit confused, maths isn't my favourite subject.

Answer 3

Q2.
x = number of 5c coins
y = number of 20c coins

you have 20 coins total
so
:x + y = 20

5x + 20y = 205

again... simultaneous equations

Answer 4

I see, thanks! So going to bring home that A, also thanks for showing me how to work it out.

Answer 5

sweet good luck dude