Quantitative Aptitude - Arithmetic Ability Questions

A wholesaler sells a watch to a retailer at a profit of 33% and the retailer sells it to a customer at a loss of 20%. If the customer pays Rs 2,181.2, what had it cost the wholesaler?

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

What is the area (in sq cm) of a rectangle of perimeter 90 cm and breadth 20 cm?

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

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?

If 35% are the passing marks. A student gets 200 marks yet fails by 24 marks. What is the maximum marks?

The value of 2 Tan53°Cot37°-Cot80°Tan10° ?

What is the third proportional to 9 and 45?