Question
 India is regarded as a country with “Demographic
Dividend’’. This is due toSolution
The demographic dividend is a rise in the rate of economic growth due to a rising share of working age people in a population. This usually occurs late in the demographic transition when the fertility rate falls and the youth dependency rate declines.
- Ajay, Bablu and Chirag can complete a certain work in 21, 28 and 15 days respectively. Ajay and Chirag started the work while Bablu joined them after 5 ... 
- A’ and ‘B’ together can complete a work in 25 days while ‘A’ takes 30 days to complete the same work alone. If ‘C’ is 20% more efficient t... 
- A and B together can complete a piece of work in 12 days, while B and C together can complete the same work in 15 days. A and C together can complete th... 
- 'A' can complete a certain task in 60 days, while 'B' can do the same in 45 days. 'A' starts the task and works alone for 18 days, after which 'B' joins... 
- P can do a piece of work in 25 days, Q can complete double the work in 40 days and R can do the work in 30 days. If all of them together earn Rs. 7400, ... 
- A man completes a work in 16 days. A woman finishes half of that work in 10 days. How many days will they take together to finish 75% of the work?
- 'P' and 'Q' together can complete a task in 20 days. 'P' alone would take 12 days fewer than 'Q' to finish it. How many days would 'Q' take to do the work ...
- The speeds of Vishank and Karun are 60 km/hr and 90 km/hr. Initially, Karun is at a point P and Vishank is at a place Q. The distance between P and Q i... 
- A can complete a work in 20 days. B takes 10 days less than A to complete the same work. In how many days can both of them together complete 90% of the ... 
- The time taken by ‘A’ to build a wall alone is 40% more than the time taken by him to build it along with ‘B’. ‘B’ will take how much percen...