Quantitative Aptitude - Arithmetic Ability Questions

If cosec 45° - sin 30° = x, then x is

The amount (in Rs) received at 10% per annum compound interest after 3 yrs is Rs 1,19,790. What was the principal?

A man spends 15% of his income. If his expenditure is Rs. 75, his income (in rupees) is:

If 9/4th of 7/2 of a number is 126, then 7/2th of that number is _____.

Weight of A and B are in the ratio 11 : 8. A’s weight increases by 40% and the total weight of A and B increases by 30%. What is the percentage increase in the B’s weight?

Which of the following quadratic equations has equal roots?

What is the value of Cot 60 - Sec 30?

P does half as much work as Q in 1/3 of the time. If together they take 15 days to complete a work, how many days will P take to do it alone?