Quantitative Aptitude - Arithmetic Ability Questions

The sum of the ages of husband and wife at present is 100. Ten years ago the ratio of their ages was 9:7. What is the age of the husband?

Find k, if the line 2x- ­3y = 11 is perpendicular to the line 3x + ky = -­4?

If a+b=5 and a­b=3, then the value of (a2+b2) is

A milkman buys milk at Rs 25 per litre and adds 1/4 of water to it and sells the mixture at Rs 26 per litre. His gain (in %) is?

A watch is listed for Rs.230 and is sold at a discount of 12%, then the sale price of the watch is

What is the simplified value of sec6 A – tan6 A – 3 sec2 A tan2 A?

In the given figure, ABCDEF is a regular hexagon whose side is 6 cm. APF, QAB, DCR and DES are equilateral triangles. What is the area (in sq.cm) of the shaded region?

After a discount of 23% an article is sold for Rs 1848. What is the marked price (in Rs) of the article?