Quantitative Aptitude - Arithmetic Ability Questions

Ganesh, Ram and Sohan together can complete a work in 16 days. If Ganesh and Ram together can complete the same work in 24 days. The number of days Sohan alone takes, to finish the work is

If cotA = x, then the value of x is

Δ PQR is right angled at Q. If m√R = 30°, then what is the value of Cot P?

Speed of a boat along and against the current are 14 kms/hr and 8 kms/hr respectively. The speed of the current is

If a3- b3= 91 and a - b = 1, then what is the value of ab?

If the value of 3-1.732, then calculate the value of 243-12108-147

The average marks obtained by a group of 16 students was 20. One student left the group as a result of which the average of the remaining students rose to 21. But another student joined, as a result of which the average marks of the group dropped a bit and became 20.5. What was the average marks obtained by the student who left and the one who joined?

A batsman has a certain average of runs for 12 innings. In the 13th inning he scores 96 runs thereby increasing his average by 5 runs. What will be his average after 13th inning?