For the following questions answer them individually
The table given below shows the number of officers working in six companies.
What is the total number of officers working in all the companies?
If $$\cos(A - B) = \frac{\sqrt{3}}{2}$$ and $$\cos(A + B) = 0$$, where A and B are positive acute angles and A $$\geq$$ B, then the measures of A and B are:
A person travels in a car at 40 km/h for 3 hours, on a bike at 30 km/h for 2 hours, and in a train at 80 km/h for 5 hours. What is the average speed at which he travelled?
20 men can finish a work in 220 days, but at the end of 90 days, 20 additional men are employed. In how many more days will the work be completed?
If $$\frac{\sin \theta + \cos \theta}{\sin \theta - \cos \theta} = \frac{3}{2}$$, then the value of $$\sin^{4} \theta - \cos^{4} \theta$$ is:
The length of the side of a cube is 2.8 cm. What is the volume of the largest sphere that can be taken out of the cube?
In a circle of radius 3 cm, two chords of length 2 cm and 3 cm lie on the same side of a
diameter. What is the perpendicular distance between the two chords?