Question

Which of the following expressions represents the value, in dollars, of a certain number of nickels, n, and dimes, d?

A. 0.15nd
B. 0.15n + d
C. 0.10n + 0.05d
D. 0.05n + 0.10d

Answer 1

The answer sould be "D"

Answer 2

The expressions which represents the value, in dollars, is:
`0.05n+0.10d`

Explanation:

One nickel can be written 5¢ or $0.05.

One dime can be written 10¢ or $0.10.

Hence, the expressions which represents the value, in dollars, of a certain number of nickels, n, and dimes, d is :

`0.05n+0.10d`