12 men finished \( \frac{1}{4} \) part of whole work in 6 days. Find the number of additional men required to complete the job in next 6 days.
The shadow of a standing tower of height 25\(\sqrt{3}\) m is found to be 50 m longer when the sun's elevation changes from 60° to X°. Find the measure of X?
An investor invested \( \frac{1}{2} \) of his capital at 5%, \( \frac{1}{4} \) at 10% and rest at 8%. If his income after 2 years is Rs. 2,800, find the capital amount.