A man gets ₹60 in first week. and after that every week, he gets ₹3 more than previous week. then how much money will he get on 20th week?

A man saved ₹660000 in 20 years. In each succeeding year after the first yea he saves ₹ 2000 more than he saved in the previous year. How much did he save in the first year?

If 12 persons working 16 h per day earn ? 33600 per week, then how much will 18 person earn working 12 h per week?

Ramkali required Rs 2500 after 12 weeks to send her daughter to school. She saved Rs100 in first week and increased her weekly savings by Rs 20 every week. Find whether she will be able to send her daughter to school after 12 weeks. What value is generated in the above situation?