Question

If the value of n nickels plus d dimes is c cents, what is n in terms of d and c?

Answer 1

n=c/5-2d

Explanation:

Each nickel represents 5 cents.

Each dime represent 10 cents.

So, n nickels and d times will be this many cents:

5n +10d = c

We are asked for an expression for n. We can find it using the usual 2-step equation solving process.

5n = c -10d . . . . . subtract 10d

n = c/5 -2d . . . . . divide by 5. This is an expression for n in terms of d.

Answer 2

n+d=c so
c-d=n you subtract the dime amount from the cents to get the nickels amount