What is the average number of candidates appearing for the entrance test from all cities together in the year 2012

What is the respective ratio of the number of candidates appearing for the entrance test from city A in 2013 and city E in the same year

If 7 boys and 2 men working together can do three times as much work per hour as a boy and a man together, what will be the respective ratio of work done by a boy and a man for the given time

In how many different ways can the letters of the word ‘CANDIDATE’ be arranged in such a way that the vowels always come together

The simple interest (p.a.) accrued on an amount of INR 17000/- at the end of four year is INR 6800/-. What would be the compound interest (compounded annually) accrued on the same amount at the same rate after two years

The age of Ranjana and Rakhi are in the ratio of 15:17 respectively. After 6 years, the ratio between the ages of Ranjana and Rakhi will be  9:10. What will be the age of Ranjana after 6 years