The price of sugar goes up by 20%. By how much percent must a house wife reduce her consumption so that the expenditure does not increase?

Explanation

To solve the problem, we need to determine by what percentage the housewife must reduce her consumption of sugar to keep her total expenditure the same after a 20% increase in the price of sugar.

### Step-by-Step Solution:

1. **Understand the Price Increase**:
- Let the original price of sugar be \( P \).
- After a 20% increase, the new price of sugar becomes:
\[
...