alleryଏକ ଟାଙ୍କି ସାଧାରଣତଃ 6 ଘଣ୍ଟାରେ ପୂର୍ଣ୍ଣ ହୁଏ କିନ୍ତୁ ଏକ ଛିଦ୍ର ଯୋଗୁଁ ଏହାକୁ 8 ଘଣ୍ଟା ଲାଗେ। ସେହି ଛିଦ୍ର ଏକାକୀ ଏକ ପୂର୍ଣ୍ଣ ଟାଙ୍କିକୁ ଖାଲି କରିବ
A18 ଘଣ୍ଟା
B48 ଘଣ୍ଟା
C24 ଘଣ୍ଟା
D14 ଘଣ୍ଟା
Answer & Solution
Correct answer: C. 24 ଘଣ୍ଟା
ଛିଦ୍ରର ହାର ହେଉଛି 1/6 - 1/8 = 1/24 ପ୍ରତି ଘଣ୍ଟା, ତେଣୁ ଏହା 24 ଘଣ୍ଟାରେ ଏକ ପୂର୍ଣ୍ଣ ଟାଙ୍କିକୁ ଖାଲି କରେ।
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