the ratio of white balls to black balls is 1:2. if 9 balls
are added then the ratio of the balls become 2:4:3. find
the number of black balls. a) 12 b) 6 c)9 d)none
Answers were Sorted based on User's Feedback
Answer / sabarish
these are question tht are seem to be like it consumes
time. so dont see jus the question and run to the next .
ans. a) 12
if 9 balls are added then the ratio to the combination
becomes 2:4:3.
9 balls make the ratio 3 for grey balls in tht mixture.
so the factor is 9/3 = 3 (in tht mixture)
so the same factor has to be maintained through out the
ratio. so black balls is 4 * 3 = 12 and white balls is 2 *
3 = 6.
Is This Answer Correct ? | 29 Yes | 4 No |
Answer / sphinx
how can grey balls come from nywhere? the ratio is only
given for two types of balls, then how come there is
another color of balls added?
Is This Answer Correct ? | 5 Yes | 1 No |
Answer / somasundari
none
taken 2 white ball na next to take 4 black balls next 3 white balls going on
Is This Answer Correct ? | 1 Yes | 0 No |
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