Quantitative Aptitude - Arithmetic Ability Questions

There were 35 studentsina hostel.Ifthenumber of studentsbe increased by 7, the expenditure on food increases by Rs 42 per day while the average expenditure of studentsis reduced by Rs 1. What was the initial expenditure on food per day?

The marked price of an article is 10/7 of the cost price and the selling price of that article is 4/5 of the marked price. What is the profit percentage?

If the rice is sold at Rs 56 per kg, there would be a 40% loss. To earn a profit of 20% what should be the price of rice (per kg)?

If the amount received at the end of 2nd and 3rd year at Compound Interest on a certain Principal is Rs 1,800, and Rs 1,926 respectively, what is the rate of interest?

Marked price of an article is Rs 520 and selling price is Rs 384.8. What is the discount percentage?

If 23x + 23y = 184, then what is the average of x and y?

x and y are two numbers such that their mean proportion is 16 and third proportion is 128. What is the value of x and y?

If 310 × 272 = 92 × 3n then the value of n is