Quantitative Aptitude - Arithmetic Ability Questions

If a/b = c/d = e/f = 2/5, then what is (5a + 3c + 2e) : (5b + 3d + 2f)?

Bunty had candies and chewing gums in his sweet box in the ratio 7 : 13. After he has eaten 8 candies and 11 chewing gums the ratio became 1 : 2. How many candies does he have now?

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 20, it becomes 116% of itself. What is the number?

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

In a triangle the length of the side opposite the right angle is 9√3 cm, what is the length of the side opposite to the angle which measures 30 degree?

The area of a rectangle in 60 sq.cm and its perimeter is 34 cm, then the length of the diagonal is

ax + 5y = 8 has slope of -4/3. What is the value of a?