16
It is: 3/10 or 0.3
Your question is not clear. You want to multiply 1.4 added to one tenth. What are you multiplying it by? It takes a minimum of two numbers to perform a multiplication. If I add one tenth to 1.4 the sum is 1.5 and after that, I could multiply it by something if there was something to multiply it by.
100 of them.
13.9
It is: 1/5 plus 1/10 = 3/10
29
29
16
It is now then 15.337 when 1/10 or 0.1 is added to it
28.9
29.3