alleryଚିନିର ଦର 25% ବଢ଼ିଲେ ଖର୍ଚ୍ଚ ଅପରିବର୍ତ୍ତିତ ରଖିବାକୁ ବ୍ୟବହୃତ ପରିମାଣ କେତେ ପ୍ରତିଶତ କମାଇବା ଦରକାର?
A15%
B20%
C25%
D30%
Answer & Solution
Correct answer: B. 20%
ଆବଶ୍ୟକ ପତନ = r / (100+r) x 100 = 25/125 x 100 = 20% |
** ଯାଞ୍ଚ କରନ୍ତୁ: ** ନୂତନ ଖର୍ଚ୍ଚ = 1.25 x 0.80 = 1.0, ଅପରିବର୍ତ୍ତିତ |
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