Quantitative Aptitude - Arithmetic Ability Questions

To travel 648 km, an Express train takes 12 hours more than Rajdhani. If however, the speed of the Express train is doubled, it takes 6 hours less than Rajdhani. The speed of Rajdhani is _____.

Seven years ago, the average age of A, B and C was 51 years. If A is 3 years older than B and B is 3 years older then C then the present ages of A, B and C are ( in year)

If the radius of a circle is increased by 21%, then its area will increase by what percent?

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

The marked price of a ceiling fan is Rs. 1200 and the shopkeeper allows a discount of 5 % on it. Then selling price of the fan is

Marked price of an article is Rs 3600 and selling price is Rs 3132. What is the discount percentage?

If x2-2x+1=0,then the value of x4+1x4 is

If x = 2+32-3, then what is the value of x2+x-9 ?