Question

I have some dimes and nickels which is $0.65.
if my dimes were nickels and my nickels were dimes, I would have $0.85 how many dimes and nickels do I have?

Answer 1

long problem lol

Answer 2

Hey i am Working that stuff out give me a min :D

Answer 3

ok

Answer 4

@ganeshie8

Answer 5

??????????

Answer 6

I don't get it

Answer 7

I will try but its tough and a difficult nut to crack.

Answer 8

yep im testing others on some questions soo yea (this is one of them)

Answer 9

Consider a system of equations using \(n,d\) as variables.

Answer 10

yes do that

Answer 11

\[\begin{split}
5n&+10d&=65\\
10n&+5d&=85
\end{split}
\]

Answer 12

yesss good now add them!!

Answer 13

multiply the first equation by 2

Answer 14

You can use elimination or substitution.

Answer 15

ummm I would add them making 15n + 15d = 150

Answer 16

No

Answer 17

then divide the equaton by 15

Answer 18

multiply the first equation by -2

Answer 19

next divide the first equation by 5

Answer 20

Add then both the equations and tell me

Answer 21

then u find out that d = 3!!

Answer 22

soo n = 7

Answer 23

review the past to understand

Answer 24

http://www.wolframalpha.com/input/?i=5n%2B10d%3D65%2C+10n%2B5d%3D85

Answer 25

nice job @wio

Answer 26

good more coming up MABYE!!