allery400 ରେ କିଣାଯାଇଥିବା ଏକ ଦ୍ରବ୍ୟ 500 ରେ ବିକ୍ରୟ ହୁଏ। ଲାଭ ପ୍ରତିଶତ କେତେ:
A20%
B30%
C25%
D40%
Answer & Solution
Correct answer: C. 25%
1. ଟଙ୍କାରେ ଲାଭ ହେଉଛି 500 - 400 = 100.
2. ଲାଭ ପ୍ରତିଶତ ସର୍ବଦା କ୍ରୟ ମୂଲ୍ୟ ଉପରେ ଗଣନା କରାଯାଏ।
3. ତେଣୁ ଏହା ହେଉଛି 100 / 400 x 100.
4. ଏହା 25 ପ୍ରତିଶତ ଦିଏ।
5. ବିକ୍ରୟ ମୂଲ୍ୟ ଦ୍ୱାରା ଭାଗ କଲେ 20 ପ୍ରତିଶତ ମିଳିବ, ଯାହା ଏହି ପ୍ରଶ୍ନରେ ମାନକ ଭ୍ରମାତ୍ମକ ବିକଳ୍ପ (trap) ଅଟେ।
_Source: syllabus Maths, Ch 7 'Comparing Quantities', S7.1 Recalling Ratios and Percentages_
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