It takes 27 days to make 1000 spare parts by 16 numbers of machines. Let’s work out using the Rule of Three method how many days will it take to make the same number of spare parts if additional two machines are installed.

There was a stock of food grains for 9 days to cater the needs of 4000 people at a shelter camp in Mongalpur village. After 3 days 1000 people left the camp for another place. Let’s work out using the Rule of three method in how many days the rest of the people will consume the remaining food grains.

42 labourers of a farm at Nasibpur village can cultivate the entire land of the farm in 24 days. But suddenly 6 labourers became ill during the period of cultivation. Let’s work out using the Rule of three method how many days it will take to cultivate the entire land of the farm by the rest of the labourers.