alleryଗୋଟିଏ ଫ୍ରକର ଲିଖିତ ମୂଲ୍ୟ 220 ଏବଂ 20% ର ରିହାତି ଘୋଷଣା କରାଯାଇଛି। ଏହାର ବିକ୍ରୟ ମୂଲ୍ୟ କେତେ:
A44
B180
C200
D176
Answer & Solution
Correct answer: D. 176
1. ଲିଖିତ ମୂଲ୍ୟ ଧାର୍ଯ୍ୟ ମୂଲ୍ୟ ସହିତ ସମାନ, ତେଣୁ ଆଧାର ହେଉଛି 220.
2. 20 ପ୍ରତିଶତର ଏକ ରିହାତିର ଅର୍ଥ ହେଉଛି ପ୍ରତି 100 ରେ 20 ଛାଡ଼।
3. ତେଣୁ ରିହାତି ହେଉଛି 20 / 100 x 220 = 44.
4. ବିକ୍ରୟ ମୂଲ୍ୟ ହେଉଛି 220 - 44 = 176.
5. 44 ଉତ୍ତର ଦେବା ଦ୍ୱାରା ପ୍ରକୃତରେ ପ୍ରଦାନ କରାଯାଇଥିବା ମୂଲ୍ୟ ପରିବର୍ତ୍ତେ ରିହାତି ମିଳିଥାଏ।
_Source: syllabus Maths, Ch 7 'Comparing Quantities', S7.2 Finding Discounts_
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