1.6 means there is a whole number which is 1 and then 0.6. This means that there are 10 0.1 to make 1 so 0.6 means 6/10. So the answer would be 1 6/10. But we need to simplify it
Find the GCF and divide the same number on the top and the bottom.
6/10 / 2/2 = 3/5
So, the simplified answer would be 1 3/5.