Quantitative Aptitude - Arithmetic Ability Questions

If a:b = 5:8, find the value of (6a -­ 5b)/(a + 2b).

Find out the odd word/letters/number/number pair from the given alternatives.

Line segment AB is parallel to line segment CD. AD intersects BC in E. If lengths of AE, BC and ED are 12 cm, 12 cm and 18 cm respectively, what is the length of EC?

The area of the square field is 196 sq.m. Its each side is

A can complete a task alone in 8 days, while B takes 12 days to do it by herself. Together with C it takes them 4 days to complete the work. If C and D together can complete the task in 15 days, then how many days will D need to complete the task by herself?

From a point, 40 m apart from the foot of a tower, the angle of elevation of its top is 60°. The height of the tower is

A dishonest milkman buys milk at Rs 24 per litre and adds 1/3 of water to it and sells the mixture at Rs 32 per litre. What is his gain?

Chandan is 2 years older than Ankit but 1 year younger than Sumit. Ankit is twice as old as Khushboo. If Khushboo's age is 25 years, what is the age (in years) of Sumit?