Quantitative Aptitude - Arithmetic Ability Questions

A sum becomes Rs 10000 in 10 years on simple interest at the rate of 10% per annum. What is the total interest (in Rs) of the 10 years?

Two cars travel from city A to city B at a speed of 60 and 108 km/hr respectively. If one car takes 2 hours lesser time than the other car for the journey, then the distance between City A and City B?

A and B together do a job in 15 days and A alone could do the same job in 20 days. How many days would B take to do half the job if he worked alone?

A sells vegetables at a profit of 35% and for weighing uses a weight which is 10% less than the article weight. What is total profit percentage?

If cosx.cosy + sinx.siny = -1 then cosx + cosy is

Coefficient of x2 in 6x3 + 4x2 + 2x + 3 is

If 3x+22x+1 = a2x+1+bx+2 be an identity, then the value of b

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