Quantitative Aptitude - Arithmetic Ability Questions

If 4x - 7y = 3 and 2x - y = 9, then x - y is.

If Sin 31° = xy, then the value of Sec 31° - Sin 59° is

In the following question, select the odd number pair from the given alternatives.

If two flood gates A and B function simultaneously, the reservoir will be filled iu 6 hours. Gate A fills the reservoir 5 hours faster than gate B. How many hours does the faster flood gate take to fill the reservoir?

A shopkeeper, sold dried apricots at the rate Rs 1,310 a kg and bears a loss of 13%. Now if he decides to sell it at Rs 1,441 per kg, what will be the result?

Ramesh sold a book at a loss of 30%. If he had sold it for Rs. 140 more, he would have made a profit of 40%. The cost price of the book is

A solid cone of height 24 cm and radius of its base 8 cm is melted to form a solid cylinder of radius 6 cm and height 6 cm. In the whole process what
percent of material is wasted?

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