Math Riddles With Answers: Can You Find The Value of Red Fish and Blue Fish in 20 Seconds?
In this Math Puzzle, we must find the values of Red Fish and Blue Fish each to solve this tricky math riddle. Are you a math genius? Only 1% with a high IQ can solve this tricky math puzzle in 20 seconds.
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Math Riddles with Answers: Solution
Answer: Blue Fish = 3 and Red Fish = -2
Explanation:
We shall refer to the Blue Fish as X and Red Fish as Y.
Let us look at the equations in a mathematical way.
9X – 11Y = 49 ………………. (Equation 1)
13X – 12Y = 63 ……………….. (Equation 2)
We will solve the question using the elimination method.
We will have to make the X- coefficients the same by eliminating the terms with 'X'.
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We will multiply equation (1) with 13 and equation (2) with 9, and then we will subtract equation (2) from (1).
=> 13 x (9X – 11Y) = (49) x 13 ………. Equation 1
=> 9 x (13X – 12Y) = (63) x 9 ……….. Equation 2
We get,
=> 117X – 143Y = 637
=> 117X – 108Y = 567
Let us subtract these both equations. (We shall subtract the LHS of Equation 1 from the LHS of Equation 1 and RHS of Equation 2 from the RHS of Equation 2).
=> 117X – 143Y - (117X – 108Y) = 637 -567
=> 117X – 143Y – 117X + 108Y = 70
Both 117X and -117X cancel each other.
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We now get:
=> -143y +108y = 70
=> -35y = 70
=> y = -2
Now, let us put the value of Y in equation (1) and solve to find the value of X
=> 9X – 11Y = 69
=> 9X- 11(-2) = 49
=> 9X +22 = 49
=> 9X = 49 -22
=> 9X = 27
=> X = 3
Therefore, the values of X (which is Blue Fish) is 3 and Y (which is Red Fish) -2 respectively.
Great Work!
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