Quantitative Aptitude - Arithmetic Ability Questions

The selling price of an article is Rs 816 if the discount on it is 15%. What would be the selling price of the article (in Rs) if the discount on it is 25%?

A missile travels at 1260 km/h. How many metres does it travel in one second?

P and Q can do a project in 60 and 30 days respectively. In how many days can they complete 90% of the project if they work together?

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

If Shubhangi walks with a speed of 2 km/hr, then she reaches her school 5/2 minutes late but if she walks with a speed of 2.5 km/hr, then she reach 5 minutes before the scheduled time. What is the distance (in km) of her school from her house?

By increasing the price of entry ticket to a fair in the ratio 5:7, the number of visitors to the fair has decreased in the ratio 11:9. In what ratio has the total collection increased or decreased?

Two baskets together have 640 oranges. If (1/5)th of the oranges in the first basket be taken to the second basket. The number of oranges in the first basket is

90% of X = 40% of Y and Y = a% of X. What is the value of a?