Quantitative Aptitude - Arithmetic Ability Questions

A shopkeeper by selling 23 Lotto shoes, earns a profit equal to the selling price of 7 Lotto shoes. His profit percentage is

Mukesh sells two shirts. The cost price of the first shirt is equal to the selling price of the second shirt. The first shirt is sold at a profit of 30% and the second shirt is sold at a loss of 30%. What is the ratio of the selling price of the first shirt to the cost price of the second shirt?

The ratio of present ages of Raman and Lamba is 7 : 5. After 6 years age of Raman will be 48 years. What is the present age (in years) of Lamba?

The ratio of present ages of Rasika and Shami is 7:5. After 17 years the ratio of their ages will be 12:11. What is Rasika's present age?

The average of 8 consecutive natural numbers is 38.5. What is the largest of these 8 numbers?

What is the average of all the one digit and two digit natural numbers?

A fraction is greater than its reciprocal by (72)/(77). What is the fraction?

If SinX-CosX=1, where 'X' is an acute angle, the value of SinX+CosX is