Niyamat chacha and Karabi didi have started a partnership business together by investing ₹30000 and ₹50000 respectively. After 6 months Niyamat chacha has invested ₹40000 more but Karabi didi has withdrawn ₹10000 for personal need. If the profit at the end of the year is ₹19000, let us write by calculating the profit share of each of them.

Three friends invested ₹12000, ₹15000 and ₹110000 respectively to purchase a bus. The first person is a driver and the other are conductors. They decided to divide of the profit among themselves in the ratio of 3:2:2 according to their work and the remaining in the ratio of their capitals. If they earn ₹29260 in one month, let us find the share of each of them.

Pradipbabu and Aminabibi started a business by investing ₹24000 and ₹30000 respectively at the beginning of a year. After 5 months Pradipbabu invested the capital of ₹4000 more. If the yearly profit was ₹27716, let us write by calculating the share of each of them.

Srikant and Soiffuddin invested ₹240000 and ₹30,0000 respectively at the beginning of the year to purchase a mini bus to run it on a route. After 4 months, their friend Peter joined them with a capital of ₹81000. Shrikant and Soiffuddin have withdrawn that money in the ratio of their capitals. Let us write by calculating the share of each if they make a profit of ₹39150 at the end of the year.

Arun and Ajoy started a business jointly by investing ₹24000 and ₹30000 respectively at the beginning of the year. But after a few months Arun invested ₹12000 more. After a year, the profit was ₹14030 and Arun received the profit share of ₹7130. Let us find after how many months did does Arun invest money in that business.