Answer & Solution
Answer: Option B
Solution:
Work done = $$\frac{5}{8}$$
Balance work $$ = \left( {1 - \frac{5}{8}} \right)$$ $$ = \frac{3}{8}$$
Less work, Less days ( Direct proportion)
Let the required number of days be x
Then,
$$\eqalign{
& \Leftrightarrow \frac{5}{8}:\frac{3}{8}::10:x \cr
& \Leftrightarrow \frac{5}{8} \times x = \frac{3}{8} \times 10 \cr
& \Leftrightarrow x = \left( {\frac{3}{8} \times 10 \times \frac{8}{5}} \right) \cr
& \Leftrightarrow x = 6 \cr} $$
