SSC CPO 12th-March-2019-Shift-1

The efficiencies of A, B and C are in the ratio 4 : 5 : 6. Working together. they can complete a work in 12 days. In how many days will A alone be able to complete that work?

A sphere of radius 6 cm is melted and recast into spheres of radius 2 cm each. How many such spheres can be made?

If the six digit number 4x4y96 is divisible by 88, then what will be the value of (x + 2y)?

If A's income is 40 % more than the income of B. then what percentage of B's income is less than income of A?

If a train runs at 60 km/h, it reaches its destination 15 minutes late. But, if it runs at 80 km/h. it is late by 7 minutes only. The right time for the train to cover its journey is:

From the top of a 10 m high building, the angle of elevation of the top of a tower is 60° and the angle of depression of the foot of the tower is $$\phi$$ , such that tan $$\phi = \frac{2}{3}$$ . What is the height of the tower to nearest metres?

A sum off ₹ 20,000 is invested for 15 months at the interest of 10% per annum compounded half yearly. What is the percentage gain, correct to one decimal place, at the end of 15 months?

In the given histogram, what is the mean height of all students correct to one decimal place?

$$PA$$ and $$PB$$ are two tangents to a circle with centre $$O$$. from a point $$P$$ outside the circle. $$A$$ and $$B$$ are points on the circle. If $$\angle APB = 40$$°, then $$\angle OAB$$ is equal to:

Two pipes A and B can fill a tank in 6 hours and 9 hours respectively. They are opened alternately for 1 hour each, starting with pipe A first. In how many hours will the tank be filled ?