Quantitative Aptitude - Arithmetic Ability Questions

The average of 6 consecutive integers is 15/2. What is the average of last three integers?

Selling price of a watch is Rs 966 and profit percentage is 15%. If selling price is Rs 798, then what will be the loss percentage?

A miner sells a diamond to a trader at a profit of 40% and the trader sells it to a customer at a profit of 25%. If the customer pays Rs 56 lakhs to buy the diamond, what had it cost the miner (in Rs lakhs)?

The ratio of selling price to the cost price is 13 : 17. What is the loss percentage?

A vendor buys 6 bananas for Rs 25 and sells them at 3 for Rs 20. What is his profit percentage?

When a number is increased by 216, it becomes 140% of itself. What is the number?

If θ is positive acute angle and 7cos2Ɵ + 3sin2Ɵ = 4, then the value of θ is

If a3+ b3 = 19 and a + b = 1, then what is the value of ab?