SNAP Profit, Loss, and Interest Questions

A reduction of 20% in the price of rice enables a customer to purchase 4kg more for Rs.120. Then find original price of rice per kg

The time required for a sum of money to become 31 times of itself at 15% Simple Interest per annum is?

A trader mixes 20 kg of rice at Rs.15 per kg with 25 kg of rice at Rs.20 per kg and sells the mixture at Rs.24 per kg. Then find his profit/loss percent.

By selling a T-shirt at 25% discount, Ramu manages to earn a profit of 20%. How much above the cost price did he mark the T-shirt?

Praveen who has a furniture shop sold a table at 20% profit. If he had sold the table for 500 rupees less, he would have incurred a loss of 20%. What is the actual cost of the table ?