Quantitative Aptitude
Virat can complete a work in 30 days and Daniel is 60% more efficient than Virat to complete the same work. Find the total time taken by Daniel to complete the work.
\(16\dfrac{3}{5}\) days
\(18\dfrac{3}{4}\) days
\(19\dfrac{5}{3}\) days
\(17\dfrac{5}{3}\) days
If sin 23° = \( \frac{a}{b} \), then the value of sec 23° - sin 67° is
\( \frac{a^{2}}{ \sqrt{b^{2} - a^{2}}} \)
\(\dfrac{b^{2}-a^{2}}{ab}\)
\( \frac{a^{2}}{b \sqrt{b^{2} + a^{2}}} \)
\( \frac{a^{2}}{b \sqrt{b^{2} - a^{2}}} \)
What is the central angle corresponding to the sector indicating the expenses incurred on health?
In an office, a typing work can be finished by Monika in 6 hours, Anita in 8 hours and Manju in 5 hours if they work alone. How much time (in hours) will they take if they work together?
\(3\dfrac{3}{59}\)
\(2\dfrac{2}{59}\)
\(2\dfrac{2}{5}\)
\(2\dfrac{2}{57}\)