A bus travels with a speed of 10 km/h in the first 15 minutes, goes 5 km in the next 15 minutes, 15 km in the next 15 minutes and 10 km in the next 15 minutes. What is the average speed of the bus in kilometre per hour for the journey described?

With an average speed of 25 km/h, a train reaches its destination in time. If it goes with an average speed of 20 km/h, it is late by 1 hour. The length of the total journey is

In the month of January of a certain year, the average daily expenditure of an organisation was ₹60. For the first 15 days of the month, the average daily expenditure was ₹80 and for the last 17 days, ₹50. Find the amount spent by the organisation on the 15th of the month.

One-fifth of a certain journey is covered at the rate of 20 km/h, one-fourth at the rate of 50 km/h and the rest at 55 km/h. Find the average speed for the whole journey.

A batsman makes a score of 40 runs in the 5th inning and thus increases his average by 4. Find the possible value of the new average.

Aman can type a sheet in 10 minutes, Baman in 20 minutes and Chaman in 30 minutes. The average number of sheets typed per hour per typist for all three typists is

Find the average increase rate (per annum) if increase in the population in the first year is 10% and that in the second year is 20%.

The average income of a person for the first 5 days of a month is ₹20, for the next 10 days it is ₹24, for the next 10 days it is ₹30 and for the remaining days of the month it is ₹10. Find the average income (in ₹) per day.

In hotel Clarks, the rooms are numbered from 101 to 150 on the first floor, 201 to 240 on the second floor and 316 to 355 on the third floor. In the month of May 2018, the room occupancy was 50% on the first floor, 50% on the second floor and 30% on the third floor. If it is also known that the room charges are ₹2000, ₹1000 and ₹1500 on each of the floors, then find the average income per room (in ₹) for the month of May 2017.

A salesman gets a bonus according to the following structure: If he sells articles worth ₹x then he gets a bonus of ₹(x/10 − 1000). In the month of January, his sales value was ₹10000, in February it was ₹12000, from March to November it was ₹30000 for every month and in December it was ₹12000. Apart from this, he also receives a basic salary of ₹3000 per month from his employer. Find his average income per month (in ₹) during the year.