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The ratio of ducks and frogs in a pond is 37 : 39 respectively. The average number of ducks and frogs in the pond is 152. What is the number of frogs in the pond?
Let the number of ducks and frogs in the pond be $$37x$$ and $$39x$$ resp
Acc to ques,
=> $$\frac{37x + 39x}{2} = 152$$
=> $$38x = 152$$
=> $$x = \frac{152}{38} = 4$$
$$\therefore$$ Number of frogs = 4 * 39 = 156
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