Quantitative Aptitude - Arithmetic Ability Questions

A boy walking at the speed of 4 km/hr covers a certain distance in 6 hours 15 minutes. If he covers the same distance by cycle in 5 hours, then what is the speed (in km/hr) of the cycle?

A can do a work in 12 days and B in 24 days. If they work on it together for 4 days, then what fraction of work is left?

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

Among three numbers, the first is twice the second and thrice the third. If the average of three numbers is 198, then what is the difference between the first and the third number?

In the following question, select the odd word pair from the given alternatives.

In ΔABC measure of angle B is 90 deg. If cosA = 5/13, and AB = 10 cm, then what is the length (in cm) of side BC?

If xy+yz+zx = 1, then the value of (1+y2)(x+y)(y+z) ?

If sin (3x ­ 20°) = cos (3y + 20°), then find the value of (x + y).