Five women can do a work in thirty six days. If the ratio between the capacity of a man and a woman is 3:1, then find how many days it will take 5 men to complete the same work?

A long-distance runner runs laps of a 400 mt. track every day. His timings (in min.) for four consecutive days are 88, 96, 89 and 87 respectively, on average. How many meters/minute does the runner cover? 

The average marks obtained in a class of 50 students is 70%. The average of first 25 is 60% and that of 24 is 80%. What is the marks obtained by the last student?

Comprehension: Read the following chart and answer the following questions.

What is the average death rate per day for the week? 

An examination was conducted for five subjects where the maximum marks for each subject was 100. Scored 82,97, 88 and 91 marks in 4 subjects respectively. If his total marks were 90 percent, then how many marks did he get in fifth subjects?

The multiplication of the age of Rajeev, before 5 years and after 9 years, is 15. What is the present age of Rajeev?

The students of a class donated Rs. 3, 481 towards relief fund. Each student donated an amount qual to the number of students in the class. The number of students in the class is: 

A man can row 10 km/h in still water. When the river is running at a speed of 4.5 km/h, then it takes him 2 h to row to a place and comes back to the initial point . How far is the place (in km) (rounded off to two decimal places)?