Comprehension Passage
In a bag, there are 17 red balls, some green, and some blue balls. The probability of drawing a green ball is (1/7) more than that of a red ball. The probability of drawing a blue ball is (1/21) more than that of a red ball.
Find the total number of balls in the bag
1
91
2
84
3
63
4
none of these
5
cannot be determined