Average & Age R...

A person reached Delhi from Jaipur by his car at a speed of 60 km per hour and returned to Jaipur along the same route at a speed of 40 km per hour. What is his average speed?

The average weight of 8 persons is increased by 2.5 kg When one of them whose weight is 56 kg is replaced by a new man. The weight of new man is:

The average of consecutive natural numbers from1 to 49 is :

Raju's average daily expenditure is ₹15 during September, ₹20 during October and ₹13 during November. What is the average daily expenditure for the three months?

The average of first five multiples of 3 is :

If difference between age of Ritu and Ram is 15 years and ratio of their ages is 3:2, then the age of Ram is:

The sum of the ages of husband and wife is 70 years and ratio of their ages is 3:2. The age of the wife is :

The average score of a cricket for 10 matches is 49.9 runs. If the average for the first six matches is 49, then what is average score for the last 4 matches?

The present age difference between father and son is 14 years. The ratio of their age will be 4: 3 after 11 years. How old is son now?