Question

in the expression xy^2 , the value of X and y decreased by 25 percent , the value of expression is ?​

Answer 1

Answer:

Let X and Y denote the new values of x and y respectively.

Then, X = 80% of x = 4x5

Y = 80% of y = 4y5

∴XY2=4x5×(4y5)2=4x5×16y25=64125xy2

Decrease in the value :

=(xy2−64125xy2)=61125xy2

∴ Decrease %

=61125xy2=(61xy2125×1xy2×100)%=48.8%

Step-by-step explanation:

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