Quantitative Aptitude - Arithmetic Ability Questions

In a trapezium ABCD, AB and DC are parallel sides and ∠ ADC = 90°. If AB = 15 cm, CD = 40 cm and diagonal AC = 41 cm. Then the area of the trapezium ABCD is

A can do a work in 20 days and B in 50 days. If they work on it together for 5 days, then what fraction of work is left?

A train travelling at the speed of 66 kmph crosses a 300 m long platform in 24 seconds. How long was the train?

The average marks obtained in a class of 50 students is 70%. The average of first 25 is 60% and that of 24 is 80%. What is the marks obtained by the last student?

The price of an article is cut by 24%, to restore to its original value, the new price must he increased by ______.

If a sum of Rs.12500 is invested for 1 year at 12% per annum interest being compounded semi­-annually, then interest earned is

Makarand works 2 times as fast as Samarjit. If Samarjit can complete a job alone in 27 days, then in how many days can they together finish the job?

The mode and median of the data 8, 6, 8, 7, 8, 6, 8, 7, 6 is