An automobiles owner reduced his monthly petrol consumption when the prices went up. The price-consumption relationship is as follows:
| Price (in Rs per liter) | 40 | 50 | 60 | 75 |
|---|---|---|---|---|
| Monthly consumption (in liter) | 60 | 48 | 40 | 32 |
If the price goes up to Rs 80 per litre, his expected consumption (in litres) will be: