Question

help please im confused

Which equation can be used to solve the following word problem?

Jessica has 9 more nickels than dimes, and the total value of her coins is $1.50. How many nickels does she have? Let n represent the number of nickels.

A.
0.10(n – 9) + 0.05n = 1.50

B.
0.10n + 0.05n + 9 = 1.50

C.
0.10(n + 9) + 0.05n = 1.50

D.
0.10n + 0.05(n + 9) = 1.50

Answer 1

for a problem like that you need 2 equations

then u can use substitution or elimination
2 equations u can use are: N = D + 9
10D + 5N = 150
then you can substitute the n in the second equation:
10D + 5(D + 9) = 150
10D + 5D + 45 = 150
- 45 - 45
10D + 5D = 105
15D = 105
105 DIVIDED BY 15 = 7

so seven dimes

and there were 9 more nickles than dimes, so take the nimver of dimes(7) and add 9 to it (7+9)
and you get 16 nickels

7 DIMES
&
16 NICKELS

Answer 2

That would bring you to the conclusion of c!

Answer 3

Are you sure its not a??