Quantitative Aptitude - Arithmetic Ability Questions

The orthocentre of an obtuse­angled triangle lies

One diagonal of a rhombus is half the other. If the length of the side of the rhombus is 20 cm, what is the area of the rhombus?

Working 5 hours a day, Shivam can read a book in 24 days. How many hours a day should he work so as to finish the same work in 8 days?

If 15 persons can do a job in 30 days, then 30 persons with twice the efficiency can do the same job in how many days?

In the first 10 overs of a cricket game, the run rate was only 3.2. The run rate in the remaining 40 overs to reach the target of 282 runs is

If a+1b = 1 and b+1c = 1 then c+1a = ?

If cosπ/4c - tanπ/4c = x, then x is

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?