If Laspeyre's index number is 225 and Paasche's index number is 144, then Fisher's ideal index number is :
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 180
L, Laspeyre's Index = 225
P, Paasche's Index = 144
F, Fisher's Index = $\sqrt{L×P}$
$=\sqrt{225×144}=\sqrt{32400}$
$=180$