Question

If 391 is divided into three parts proportional to $\frac{1}{2}:\frac{2}{3}:3$, then the first part is

• A. 150
• B. 160
• C. 180
• D. none

Answer 1

The correct option is D none

If $391$ divide into three parts $\frac{1}{2}:\frac{2}{3}:3$.

Therefore, the first part will be

$=\frac{\frac{1}{2}}{\frac{1}{2}+\frac{2}{3}+3}\times 391$

$=\frac{\frac{1}{2}}{\frac{3+4+18}{6}}\times 391$

$=\frac{3}{25}\times 391$

$\approx 47$

Hence, this is the answer.