Quantitative Aptitude - Arithmetic Ability Questions

A man spends a part of his monthly income and saves the rest. The ratio of his expenditure to the saving is 61 : 6. If his monthly income is Rs.8710, the amount of his monthly savings is

What is the slope of the line, perpendicular to the line 3x - 6y = 4?

A dealer is selling an article at a discount of 5% on the Marked price. If the Marked price is 12% above the cost price and the article was sold for Rs. 532 then the cost price is (in Rs.)

The sum of two positive integers is 80 & difference between them is 20. Then what is difference of squares of those numbers ?

Findout the odd word/letters/number/number pair from the given alternatives.
7 : 50 : : 9 : ?

Select the odd number from the given alternatives.

The length of a rectangle is increased by 25%. To maintain the same area, the breadth has to be decreased by

D and E are points on the sides AB and AC respectively of ΔABC such that DE is parallel to BC and AD:DB = 4:5, CD and BE intersect each other at F. Then the ratio of the areas of ΔDEF and ΔCBF