SSC CPO 12th-March-2019-Shift-2

The efficiency of A, B and C are in the ratio 5 : 6 : 9. Working together, they can complete a work in 18 days. In how many days can B alone complete 25% of that work?

In the given histogram, what is the percentage of students whose height is in the class interval 165 - 170?

In the given pie-chart, the number of persons using a car is what percentage of persons using a scooter?

ABCD is a cyclic quadrilateral such that AB is the diameter of the circle circumscribing it and $$\angle ADC=145^\circ$$. What is the measure of $$\angle BAC$$  ?

36 persons working 8 hours a day can do 3 units of work in 12 days. How many persons are required to do 5 units of that work in 16 days, if they work for 6 hours a day?

If a train runs with the speed of 48 km/h, it reaches its destination late by 12 minutes. However, if its speed in 64 km/h it is late by 3 minutes only. The right time for the train to cover its journey (in minutes) is:

If $$\tan3x=\cot(30^\circ+2x)$$, then what is the value of $$x$$ ?

In a class of 45 students. 40% are girls and the remaining are boys. The average marks of the girls is 64 and that of the boys is 60. What is the average marks of the whole class?

In the given histogram, which class is the median class?

A boat can go 30 km downstream and 24 km upstream in 2 hours 27 minutes. Also, it can go 10 km downstream and 4 km upstream in 37 minutes. What is the speed of the boat upstream (in $$km/hr$$)?