Q115Long answer
With the decrease in prices of tea by 15% Tonu, the chaiwallah, was able to buy 2 kg more of tea with the same Rs 45 that he spent each month on buying tea leaves for his chai shop. What was the reduced price of tea? What was the original price of tea? The per cent of decrease tells what per cent the amount of decrease is of the original number. To find the per cent of decrease express a ratio of the amount of decrease to the original number as per cent. Per cent of amount of decrease ×100 Decrease original number