It mean benchmarks in out side of math
a criterion by which to measure something; standard; reference point
0.4 has 4 tenths
Look at 0.4 as 0.40
Divide the 40 by 10 and get 4
-Hope this helped!
The answer to that question is 38.
30*(100%+40%)
30*140%
140% as a decimal is (140/100) which is 1.4
30*1.4=42
42/120=0.32.
Ali should sell each can for $0.32
Hope this helps :)
