Quantitative Aptitude - Arithmetic Ability Questions

The average weight of 100 students is 32 kg. The average weight of first 49 students is 30 kg and of last 50 students is 34 kg. What is the weight (in kg) of the 50th student?

The selling price of 6 bananas is equal to the cost price of 8 bananas. Then the percentage of profit is

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)?

On a certain item profit is 150%. If the cost price increases by 25% what will be the new profit margin (in %)?

Two motorcycles are moving towards each other with the speeds of 38 km/hr and 88 km/hr respectively. One second before the collision what will be the distance (in metres) between the two motorcycles?

In the following question, select the odd number from the given alternatives.

In a city, 40% of the people are illiterate and 60% are poor. Among the rich, 10% are illiterate. The percentage of the illiterate poor population is

A bag contains 25 paise, 50 paise and 1 Rs coins. There are 220 coinsinall and the total amount in the bag is Rs. 160. If there arethrice as many 1 Rs. coins as there are 25 paise coins, then what is the number of 50 paise coins?