Question

Q.7 Single Choice
The variable x is inversely proportional to y, If x
increases by 20%, then by what percent will y
decrease so that the result will be same?
16 %
502%
C
50%
D
20%​

Answer 1

Answer:

For inversely proportional numbers,product of number must be constant.

xy = const. equation(10

let, x and y both 20

then 20×20 = 400=constant

if x increases by 20 percent then the new value of x will be 24

From equation (1)

24×y =400

y = 400÷24

And now, in percentage decrease in y

[(20 - 400/24 )/20]×100 = 16.666 percent

MARK ME BRAINLIEST✨✨✨✨✨✨✨✨