Quantitative Aptitude - Arithmetic Ability Questions

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

If cotA = x, then the value of x is

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 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 fan was sold for Rs. 3600 at a loss of 4%. What would be the gain or loss percent ifit was sold for Rs. 4200?

The ratio of two numbers is 3 : 7. If their product is 1344, then what is the sum of both the numbers?

A invested an amount of x rupees in a bank for 2 years which gave 5% interest in year 1 and 6% interest in year 2. The amount received after 2 years is Rs 24,486. What is the value of x?