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ଏକ ସଂଖ୍ୟା ପ୍ରଥମେ 20% ବୃଦ୍ଧି ପାଇ ତା’ପରେ 20% ହ୍ରାସ ପାଇଲା | ନିଟ୍ ପରିବର୍ତ୍ତନ ହେଉଛି |

A4% ହ୍ରାସ |
B4% ବୃଦ୍ଧି |
Cକୌଣସି ପରିବର୍ତ୍ତନ ନାହିଁ
D2% ହ୍ରାସ |
Answer & Solution
Correct answer: A. 4% ହ୍ରାସ |
** ସଫଳ ପ୍ରତିଶତ ପରିବର୍ତ୍ତନ: ** a + b + ab / 100 = 20 + (-20) + (20) (-20) / 100 = -4% | ସମାନ ଭାବରେ, 1.20 x 0.80 = 0.96 = 4% ହ୍ରାସ |
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