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What is the total number of ducks?

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Out of a group of ducks, 7/2 times the square root of the number are swimming in water while two remaining are playing on the shore.
What is the total number of ducks?

posted May 13, 2016 by Mridul

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2 Answers

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the total numbers are 16,
because according to the ques
(7/2)*square root of 16 + 2=16

answer May 13, 2016 by Hasan Raza
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Let total ducks=X
let square root of X=Y
Y^2-7*Y/2=2
2*Y^2-7Y=4
2*Y^2-7Y-4=0
2*Y^2-8Y+Y-4=0
(2Y+1)(Y-4)=0
Y=4
Y^2=X=16
Total ducks=16

answer May 15, 2016 by Shiv Goel



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