Quantitative Aptitude - Arithmetic Ability Questions

Pranita got 30 marks more in Math than what she got in Science. Her Math marks are 60% of the sum of her Math and Science marks. What are her Science marks?

For an article the profit is 190% of the cost price. If the cost price increase by 10% but the selling price remains same, then profit is what percentage of selling price (approximately)?

Ehsaan is twice as good a worker as Kamal and together they finish a piece of work in 29 days. In how many days will Kamal, working alone, finish the work?

If a3 + b3 = 28 and a + b = 4, then what is the value of ab?

If x + √5 = 5 + √y, and x, y are positive integers, then the value of x+yx + y

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

At what rate of compound interest per annum will a sum of Rs 20000 become Rs 23328 in 2 years?

If Cosec θ = 17/8, then Cot θ = ?