Quantitative Aptitude - Arithmetic Ability Questions

Two trains start moving from stations S and R. Both trains move towards each other at speeds of 35 km/hr and 42 km/hr respectively. When they meet each other, the second train has travelled 90 km more than the first. What is the distance (in km) between S and R?

The average age of 36 students in a group is 14 years. When the teacher's age is included in it, the average increases by one. The teacher's age in years is

The ratio of present ages of Rangana and Sayed is 7:5. After 11 years the ratio of their ages will be 4:3. What is Rangana's present age?

If 7 spiders make 7 webs in 7 days , then 1 spider will make 1 web in how many days ?

P and Q undertook to do a work for Rs 7200. P alone could do it in 20 days and Q alone in 12 days. With the assistance of R they finished the work in 5days. What is the share (in Rs) of R?

select the odd word/letters/number/number pair from the given alternatives.

In the following question, select the odd word pair from the given alternatives.

What is the value of cos 11π/6?