Question

okay if i have 30 nickels and dimes worth $2.40. how many nickles and dimes do i have ??

Answer 1

wait...do you mean 30 nickels and 30 dimes that equal to 2.40? Or 30 coins altogether?

Answer 2

together!!

Answer 3

???????

Answer 4

your problem is a little difficult :( i'm sorry i wasn't able to answer it.

Answer 5

its okay

Answer 6

let x = no. of nickels
y = no. of dimes

x + y = 30
5(cents)x + 10(cents)y = 240

multiply the first equation by -5

-5x - 5y = -150
5x + 10y = 240

5y = 90
y = 19

There are 19 dimes and 11 nickels. I remembered how to do it :D It seems i made a mistake in my solution before that's why I can't solve it.