Quantitative Aptitude - Arithmetic Ability Questions

If Girish's salary is 4/9 times of Harishankar's and Shirish's salary is 5/6 times of Harishankar's, what is the ratio of Girish's salary to Shirish's.

Two students appeared for an examination. One of them secured 9 marks more than the other and his marks were 56% of the sum of their marks. The marks obtained by them are

An octahedron has 6 vertices. How many edges does it have?

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

Select the odd word/letters/number/number pair from the given alternatives.

If tanA -­ tanB = X, then the value of X is

A car travels a certain distance at 34 km/h and comes back at 66 km/h. What is the average speed for total journey?

Both X and Y together can complete a work in 12 days and Y alone can complete the same work in 30 days. In how many days will X alone complete the work?