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 that of the red marbles?
- A6
- B12
- C9
- D18
Solution & Step-by-step Explanation
Given ratio of Green : Red : Blue marbles = 5:4:6.
Sum of ratio terms = 5+4+6=15 units.
Total number of marbles = 135.
Value of 1 unit=
15
135
=9.
We need to find the difference between the number of blue marbles and red marbles.
Difference in units=Blue−Red=6−4=2 units
Actual difference=2×9=18
Sum of ratio terms = 5+4+6=15 units.
Total number of marbles = 135.
Value of 1 unit=
15
135
=9.
We need to find the difference between the number of blue marbles and red marbles.
Difference in units=Blue−Red=6−4=2 units
Actual difference=2×9=18