Quantitative Aptitude - Arithmetic Ability Questions

S does half as much work as T in 1/7 of the time taken by T. If together they take 21 days to complete a work, then how may days shall S take to complete that work alone?

For the data given below. find the sum of mode. median and mean.6, 3, 8, 4, 3, 11, 7, 4, 5, 4.

30% of a number exceeds 25% of the same number by 27. What is the value of the number?

If the side of a square is increased by 20%, then what will be the percentage increase in its perimeter?

By increasing the price of entry ticket to a fair in the ratio 7:17, the number of visitors to the fair has decreased in the ratio 9:5. In what ratio has the total collection increased or decreased?

The ratio of two numbers is 5 : 6. If their product is 1470, then what is the sum of both the numbers?

If cosA = x, then x is

20% of a = b, then b% of 20 is the same as _________ of a.