alleryଦୁଇଟି ପାଇପ୍ ଗୋଟିଏ ଟାଙ୍କିକୁ ଯଥାକ୍ରମେ 20 ଏବଂ 30 ଘଣ୍ଟାରେ ଭର୍ତ୍ତି କରନ୍ତି, ଏବଂ ତୃତୀୟ ପାଇପ୍ ଏହାକୁ 60 ଘଣ୍ଟାରେ ଖାଲି କରେ। ସବୁଗୁଡ଼ିକ ଖୋଲା ରହିଲେ, ଏହା ଭର୍ତ୍ତି ହେବାକୁ ଲାଗିବ
A15 ଘଣ୍ଟା
B18 ଘଣ୍ଟା
C10 ଘଣ୍ଟା
D12 ଘଣ୍ଟା
Answer & Solution
Correct answer: A. 15 ଘଣ୍ଟା
ମୋଟ ହାର ହେଉଛି 3/60 + 2/60 - 1/60 = 4/60 = ଘଣ୍ଟା ପ୍ରତି 1/15, ତେଣୁ 15 ଘଣ୍ଟା।
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