allery840 ଧାର୍ଯ୍ୟ ମୂଲ୍ୟ ଥିବା ଏକ ଜିନିଷ 714 ରେ ବିକ୍ରି ହୁଏ। ରିହାତି ପ୍ରତିଶତ ହେଉଛି:
A12%
B18%
C15%
D20%
Answer & Solution
Correct answer: C. 15%
1. ଟଙ୍କାରେ ରିହାତି ହେଉଛି ଧାର୍ଯ୍ୟ ମୂଲ୍ୟ ବିୟୋଗ ବିକ୍ରୟ ମୂଲ୍ୟ।
2. ତାହା ହେଉଛି 840 - 714 = 126।
3. ରିହାତି ପ୍ରତିଶତ ସର୍ବଦା ଧାର୍ଯ୍ୟ ମୂଲ୍ୟକୁ ଆଧାର ଭାବରେ ନେଇ ଗଣନା କରାଯାଏ।
4. ତେଣୁ ଏହା ହେଉଛି 126 / 840 x 100।
5. ଏହା 15 ପ୍ରତିଶତ ଦେଇଥାଏ। ଏହା ବଦଳରେ ବିକ୍ରୟ ମୂଲ୍ୟ ଦ୍ୱାରା ଭାଗ କଲେ ଭୁଲ୍ ଭାବରେ ପ୍ରାୟ 17.6 ପ୍ରତିଶତ ମିଳିବ।
_Source: syllabus Maths, Ch 7 'Comparing Quantities', S7.2 Finding Discounts_
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