Let the bunches of feed bought for Rs 1280 be x. The quantity of feed bought and their cost are in direct proportion.
∴ \(\frac{600}{15} = \frac{1280}{x}\)
∴ 600x = 1280 × 15 …. (Multiplying both sides by 15x)
∴ \(x = \frac{1280 \times 15}{600} = 32\)
∴ 32 bunches of feed can be bought for Rs 1280.
