Sorry if this problem is very basic I just know the right procedure. This questions are from a placement test I will be taking, so expect to see similar ones.

If you have four quarters, three dimes, two nickels, and two pennies, what fraction of the whole coin

collection is in dimes?

My procedure:

Total money(whole coin collection ?) is - $1.42

$\displaystyle \frac{1.42}{.10}$

The right answer (given on the packet):

$\displaystyle \frac{3}{11}$