Quantitative Aptitude - Arithmetic Ability Questions

Simplify: (213 x 213 + 187 x 187)

Select the odd word/letters/number/number pair from the given alternatives.

A dishonest milkman buys milk at Rs 30 per litre and adds 1/5 of water to it and sells the mixture at Rs 32 per litre. What will be his gain?

The marked price of a chair is Rs 550 and a discount of 20% is given on it. What is the selling price (in Rs)?

Price of 1 kg of sugar is increased by 30% and the increase is of Rs 48. What is the new price (in Rs) of the sugar per kg?

A man sells an article at a profit of 35%. If he had bought it for 15% less price and sold it for Rs. 32 less, then he would have gained 40%. What is the initial cost price (in Rs) of the article?

If a2+b2=80 and ab = 32, then calculate the value of a-b/a+b.

A boat goes a certain distance at 40 km/hr and comes back the same distance at 24 km/hr. What is the average speed (in km/hr) for the total journey?