GATE EC 2020 : GA - Quiz 2

On an item there is a discount of 10% on the marked price of Rs. 480. In the festival season, there is an additional discount after which item was sold at Rs. 420. What was the additional discount?

A sum of money increased by 10% in 2 years at the rate of simple interest. What will be the compound interest on Rs 36000 in 2 years at same rate?

Consider the following statements:

I. If p>2 is a prime number then,  is always divisible by 4.

II. If p>2 is a prime number then, it cannot be written as  or  for a suitable k>0.

Which of the above statements is/are correct?

19 people went to a hotel for a combined dinner party. 13 of them spent Rs 79 each on their dinner and the rest spent Rs 4 more than the average expenditure of all the 19. What was the total money spent by them?

In laptop market, only three competitors Lenovo, aces and dell exist. Last year the sales of Aces laptops were 10% more than the Lenovo. For this year both the firms Lenovo and aces increased their respective sales by 20%. This year the sales of aces are five times that of dell. How much were the sales (approx.) of the firm dell last year, if the total sales remained constant for the two years?