Quantitative Aptitude - Arithmetic Ability Questions

Product of digits of a 2-digit number is 15. If we add 18 to the number, the new number obtained is a number formed by interchange of the digits. Find the number.

5 year hence, ratio of ages of A and B will be 7 : 5 and difference between their ages will be 4 years. What are present ages (in years) of A and B
respectively?

The reciprocal of the sum of the reciprocals of 2/9 and 7/10 is

The angle of elevation of the top of a tower from a point A on the ground is 30°. On moving a distance of 20 metres towards the foot of the tower to a point B, the angle of elevation increases to 60°. The height of the tower in meters is

Selling price of an article is Rs 494 and discount of 5% is offered. What is the marked price (in Rs)?

The ratio of present ages of Ramya and Saurabh is 8:7. After 10 years the ratio of their ages will be 12:11. What is Ramya's present age?

If the radius of a circle is increased by 16%, its area increases by

If 35% of A is equal to 60% of B, then what is the ratio of A and B?