alleryA ଏବଂ B କୁ 10 ଦିନ, B ଏବଂ C କୁ 15 ଦିନ, A ଏବଂ C କୁ 12 ଦିନ ଲାଗେ। ତିନିଜଣ ଏକତ୍ର କେତେ ଦିନ ନେବେ
A9 ଦିନ
B6 ଦିନ
C7.5 ଦିନ
D8 ଦିନ
Answer & Solution
Correct answer: D. 8 ଦିନ
ମିଳିତ ହାରର ଦୁଇ ଗୁଣ ହେଉଛି 1/10 + 1/15 + 1/12 = 1/4, ତେଣୁ ତିନିଜଣ ଏକତ୍ର ପ୍ରତିଦିନ 1/8 କାମ କରନ୍ତି, ଅର୍ଥାତ୍ ସେମାନଙ୍କୁ 8 ଦିନ ଲାଗିବ।
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