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ഒരു കുട്ടി 9 പേന വാങ്ങിയപ്പോൾ ഒരെണ്ണം സൗജന്യമായി ലഭിച്ചാൽ ഡിസ്കൗണ്ട് എത്ര ശതമാനം ?

A5%

B10%

C15%

D20%

Answer:

B. 10%

Read Explanation:

ഡിസ്കൗണ്ട് = സൗജന്യം/ ആകെ എണ്ണം X 100% = 1/9+1 X 100 = 1/10 X 100 = 10%


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