Answer :

1/10 of 17 is 170.  17 x 10 = 170.  Since 17 is one tenth of the number, all we have to do is multiply it by ten.
To solve this we need first find are number that we have to multiply 17 by to get are number. To do this we look at are denominator and because it is 1 over 10 meaning that 17=1 and x=10 all that we have to do is take 17*10=170.

Enjoy!=)