exam
Maths Puzzle
Numerical Ability
An air sample 4.0 ppm (parts per million) of two pollutants. The concentration of one is four times the other. What are the concentrations?
Read Solution (Total 1)
-
- One os 0.8 ppm and the other is 3.2ppm
- 9 years agoHelpfull: Yes(0) No(0)
exam Other Question