A packet of washing powder is advertised as having '20 extra powder'. If it contains 1.32kg. What would the original pack contain?

If the packet of washing powder is advertised as having "20 extra powder," this implies that the current weight of 1.32 kg includes an additional 20% of the original amount. To find the original amount, you can let the original weight be ( x ). The equation can be set up as ( x + 0.2x = 1.32 ), which simplifies to ( 1.2x = 1.32 ). Solving for ( x ) gives ( x = 1.32 / 1.2 ), resulting in an original pack weight of 1.1 kg.