Question

12 cows together eat 756 kg of grass in 7 days, How much grass will be eaten by 15 cows in 10 Days ?

• A. 1500 kg
• B. 1200 kg
• C. 1350 kg
• D. 1400 kg

Answer 1

Answer: (C)

1350 kg

12 cows in 7 days eat 756 kg of grass 12 cows in 1 day eat $\frac{756}{7}$ kg of grass (Less days $\Rightarrow$ Less grass)
1 cow in 1 days eats $\left(\frac{756}{12\times 7}\right)$ kg of grass (Less cows $\Rightarrow$ Less grass)
1 cow in 10 days eats $\left(\frac{756\times 10}{7\times 12}\right)$ kg of grass = 1350 kg (More cows $\Rightarrow$ More grass)