alleryଜଣେ ଦର୍ଜି ଗୋଟିଏ ବ୍ୟାଚ୍ 20 ଦିନରେ ଏବଂ ତାଙ୍କ ସହଯୋଗୀ 30 ଦିନରେ ସିଲାଇ କରନ୍ତି। ଏକାଠି ସେମାନେ ଶେଷ କରନ୍ତି
A25 ଦିନ
B12 ଦିନ
C10 ଦିନ
D15 ଦିନ
Answer & Solution
Correct answer: B. 12 ଦିନ
ସେମାନଙ୍କର ମିଳିତ ହାର ପ୍ରତିଦିନ 1/20 + 1/30 = 5/60 = 1/12 ଅଟେ, ଯାହା 12 ଦିନ ଦିଏ।
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