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.

Ages of Lalu and Balu are in the ratio of 1 : 2. After 7 years their ages ratio changes to 3 : 5. The elder person age is

When a discount of 25% is given on a box of popcorn, the profit is 25%. If the discount is 10%, then the profit is

A product was sold foe Rs. 4,500 at a profit of 12.5%. What was the amount of profit?

Two fractions are such that their product is ­4 and sum is ­32/15. Find the two fractions.

In ∆ABC, ∠A = 90°, AD ⊥ BC and AD = BD = 2 cm. The length of CD is

If 2x-2x=1 (x≠0),then the value of x3-1x3 is

In an examination, 52% candidates failed in English and 42% failed in Mathematics. If 17% failed in both the subjects, then what percent passed in both the subjects?