Abook cover is 8 inches by 10 1/4 inches. what are the dimensions of the cover when it was reproduced for a catalog picture using a 1/12 scale? show your work

Multiply 10 1/4 inches by 1/12. To make it easier, turn 10 1/4 into a mixed number by multiplying the 10 and the 4 and adding it to the 1.
41/4 x 1/12 = 41/48 (prime)
Now multiply 8 by 1/12. 
8/1 x 1/12 = 8/12 = 2/3 
The new dimensions are 41/48 inches by 2/3 inches. 

Its d so thats how it would would back from 1.0 form three four two