Quantitative Aptitude - Arithmetic Ability Questions

In the following question, four number pairs are given. The number on left side of (–) is related to the number of the right side of (–) with some Logic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives.

Tanya got an increment of 15% in her salary. If her enhanced salary is Rs.14,030. What was her original salary?

Find the curved surface area (in cm2) of a right circular cone of diameter 28 cm and slant height 12 cm.

PQ and RS are common tangents to two circles intersecting at A and B. AB, when produced both sides, meet the tangents PQ and RS at X and Y, respectively. If AB = 3 cm, XY = 5 cm, then PQ (in cm) will be

A train runs at 80 kmph for the first 40 km and the next 30 km at 60 kmph. Find the average speed.

Deepti bought a set of cups for Rs. 175, but then had to sell it later to clear old stocks for Rs. 161. What is the percentage of loss that she had to incur?

How much does one need to add to 2/3 to obtain 3/2?

The angles of depression of two ships from the top of a light house are 45° and 30° toward east. If the ships are 200m apart, the height of the light house is (take √3=1.73)