Let the initial capitals be proportional to
\[ \frac{1}{4} : \frac{1}{3} : \frac{1}{4} \]
Taking LCM \(=12\):
\[ 3 : 4 : 3 \]
Thus initial capitals:
A = \(3\), B = \(4\), C = \(3\)
For A:
First \(2\) months:
\[ 3 \times 2 = 6 \]
After withdrawing half, capital becomes \(1.5\) for remaining \(8\) months:
\[ 1.5 \times 8 = 12 \]
Total for A:
\[ 6 + 12 = 18 \]
For B:
\[ 4 \times 10 = 40 \]
For C:
\[ 3 \times 10 = 30 \]
Thus the ratio of profit:
\[ 18 : 40 : 30 \]
Simplifying:
\[ 9 : 20 : 15 \]
Total parts:
\[ 9 + 20 + 15 = 44 \]
B's share:
\[ \frac{20}{44} \times 378 \]
\[ = 171.82 \]
Correct Option: B
প্রাথমিক মূলধনের অনুপাত:
\[ \frac{1}{4} : \frac{1}{3} : \frac{1}{4} \]
LCM \(=12\) নিলে পাই:
\[ 3 : 4 : 3 \]
অতএব মূলধন:
A = \(3\), B = \(4\), C = \(3\)
A এর জন্য:
প্রথম \(2\) মাস:
\[ 3 \times 2 = 6 \]
এরপর মূলধনের অর্ধেক থাকায় \(1.5\) দিয়ে পরবর্তী \(8\) মাস:
\[ 1.5 \times 8 = 12 \]
মোট:
\[ 6 + 12 = 18 \]
B এর জন্য:
\[ 4 \times 10 = 40 \]
C এর জন্য:
\[ 3 \times 10 = 30 \]
লাভের অনুপাত:
\[ 18 : 40 : 30 \]
সরল করলে:
\[ 9 : 20 : 15 \]
মোট অংশ:
\[ 44 \]
B এর অংশ:
\[ \frac{20}{44} \times 378 = 171.82 \]
সঠিক উত্তর: B
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