NTPC CBT- 2 QUANT QUIZ

Find the average of the following set of digits 232,149,208,301,399,415

If 21 is added to a number, it becomes 7 less than thrice its number. Accordingly, what is that number?

If a typewriter takes four minutes to type a page, then how many typers will be needed to type 1080 pages between 1PM to 2 PM in the afternoon?

The population of a town is 15,000. If the number of males increases by 8% and the number of females by 10%, then the population will increase to 16,300. Accordingly, find the number of females in that city.

If Rs. 5,000 becomes Rs. 5,700 in a years times, what will Rs. 7,000 become at the end of 5 years at the same rate of interest ?

Tap A can fill a tank in 8 hours. The second tap B can fill it in 6 hours. If both the taps A and B are opened and after 2 hours the tap A is closed, then second tap B fill the tank alone. In how many hours can it be filled now by B?

Six bells start ringing at once, then at intervals of $2,4,6,8,10,12$ seconds. How many times will they ring together in 30 minutes?

The age of a father is 7 years more than the age of the mother and the mother is 3 times the age of her daughter at present. At present the age of the daughter is 10 years. Accordingly, what was the age of the father at the time of the birth of the daughter?

A trader allows a 10% discount on the marked price. How much more than the cost price should he mark on the articles to make a profit of 17 %?

A can do a piece of work in 4 days and B can do it in 6 days. If both of them work together then in how many days will it take to complete the work? ,