The ratio of ducks and frogs in a pond is 37 : 39 respectively. The average number of ducks and frogs in the pond is 150. What is the number of frogs in the pond ?  Choose the correct choice from the following answers:
A) 148	B) 154	C) 156	D) 144	E) None
Solution:   Ratio of Ducks and Frogs in Pond,   = 37 : 39.   Average of Ducks and Frogs in Pond,   = 150.   So, total number of Ducks and Frogs in the Pond,   = 2* 150= 
<gadget id="calculator">2* 150</gadget>
<output>300</output>
300.   Therefore,   Number of Frogs,= (300 *39)/76 = 154.   Answer: Option 154
<result>B</result>
The ratio of ducks and frogs in a pond is 37 : 39 respectively. The average number of ducks and frogs in the pond is 150. What is the number of frogs in the pond ?