Quantitative Aptitude - Arithmetic Ability Questions

The first and last terms of an arithmetic progression are 23 and ­42. What is the sum of the series if it has 14 terms?

The average marks in science subject of a class of 20 students is 68. If the marks of two students were misread as 48 and 65 of the actual marks 72 and 61 respectively, then what would be the correct average?

If price of the table is increased by 25%, then a person can buy 25 table less for Rs 25000. What is the original price (in Rs) of the table?

A sum of Rs 4000 becomes Rs 6000 in 1 year at a certain rate of compound interest. What will be the sum (in Rs) after 4 years?

At 22% discount the selling price of a refrigerator is Rs 26000, what is the selling price if the discount is 40%?

The compound interest earned in two years at 8% per annum is Rs 4160. What is the sum (in Rs) invested?

10% discount is offered on an item. By applying a promo code the customer wins 20% cash back. What is the effective discount?

If a retailer offers a discount of 32% on the marked price of his goods and thus ends up selling at cost price, what was the % markup price?