alleryএকটি মান যদি 500 থেকে হ্রাস পেয়ে 400 হয়, তবে শতকরা হ্রাসের পরিমাণ কত?
A20%
B25%
C15%
D10%
Answer & Solution
Correct answer: A. 20%
হ্রাস = 500 - 400 = 100। শতকরা হ্রাস = (100 / 500) * 100 = 20%।
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