SOLUTION: A bowl contains a apples and b bananas and no other fruit, if a piece of fruit is picked at random from this bowl, the probability that an apple is picked is3/7 what is the value o

Algebra ->  Statistics  -> Normal-probability -> SOLUTION: A bowl contains a apples and b bananas and no other fruit, if a piece of fruit is picked at random from this bowl, the probability that an apple is picked is3/7 what is the value o      Log On


   

Question 1141567: A bowl contains a apples and b bananas and no other fruit, if a piece of fruit is picked at random from this bowl, the probability that an apple is picked is3/7 what is the value of a/b?
A) 3/10
B)3/7
C)4/3
D)3/4
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
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From the condition,


a%2F%28a%2Bb%29 = 3%2F7.


Hence,  7a = 3*(a+b),   7a = 3a + 3b,  7a-3a = 3b,  4a = 3b.


It implies that   a%2Fb = 3%2F4.    ANSWER


The answer is option D).