Quantitative Aptitude - Arithmetic Ability Questions

Amal is 5 times as good a workman as Bhairav and therefore is able to finish a job in 48 days less than Bhairav. Working together, they can do it in

The time for a train of length 110 metres running at the speed of 72 km/hr to cross a bridge of length 132 metres is

The average of three numbers is 40. First number is 4/3 of the third number. If third number is 20 less than second number, then what is the value of second number?

If a3 + b3 = 19 and ab = -6 , then what is the value of a + b?

An angle is smaller than its supplementary angle by 70°. What is the measure of the angle?

What is the value of sin (90° + 2A)[4 – cos2(90° – 2A)]?

If a - b = 2 and ab = 15, then what is the value of a3- b3?

Find two numbers whose sum is 29 and the product is 100.