engineering recuitment HPCL Engineer Mock Test 2024 Quantitative Aptitude Ratio and Proportion Simple Ratios
There are green, red and blue marbles in a bag. Their ratio is 5 ∶ 4 ∶ 6, respectively. If there are 135 marbles in the bag, what is the difference between the number of blue marbles and what of the red marbles?
1
6
2
12
3
9
4
18