alleryଏକ ପମ୍ପ 5 ଘଣ୍ଟାରେ ଏକ ଟାଙ୍କି ପୂର୍ଣ୍ଣ କରେ, କିନ୍ତୁ ଏକ ଛିଦ୍ର ଥିବାରୁ ଏହାକୁ 6 ଘଣ୍ଟା ଲାଗେ। କେବଳ ସେହି ଛିଦ୍ର ଏହାକୁ ଖାଲି କରିବାକୁ ନେବ
A30 ଘଣ୍ଟା
B11 ଘଣ୍ଟା
C25 ଘଣ୍ଟା
D20 ଘଣ୍ଟା
Answer & Solution
Correct answer: A. 30 ଘଣ୍ଟା
ଛିଦ୍ରର ହାର ହେଉଛି 1/5 - 1/6 = 1/30 ପ୍ରତି ଘଣ୍ଟା, ତେଣୁ ଖାଲି କରିବାକୁ 30 ଘଣ୍ଟା ଲାଗିବ।
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