Question

The price of an article increase by 20% and a man now get 10kg less, if he also reduce his consumption by 20%, then find how much kg of article he used to purchase in normal price

Answer 1

Let the article he used to purchase be $x$Kg and the cost price of article be $C$/Kg

According to question $C\times x=$ ($C\times \frac{6}{5}$)($x\times \frac{4}{5}-10$)

Solving we get $x=300$