alleryএটা পৰিমাণ 20% হ্ৰাস পায়, তাৰ পিছত 20% বৃদ্ধি পায়। মুঠ পৰিৱৰ্তন কিমান?
Aকোনো পৰিৱৰ্তন নাই
B8% হ্ৰাস
C4% বৃদ্ধি
D4% হ্ৰাস
Answer & Solution
Correct answer: D. 4% হ্ৰাস
ক্ৰমিক গুণক 0.8 আৰু 1.2-ৰ গুণফলে 0.96 দিয়ে, অৰ্থাৎ 4% হ্ৰাস।
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