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Grassin a field can completely feed 20 cows or 30 goats for a day. The same field is sufficient to feed 8 cows and 12 goats for
- A\(1\frac{1}{2}\) days
- B\(1\frac{1}{3}\) days
- C\(1\frac{1}{9}\)days
- D\(1\frac{1}{4}\) days
Answer not set
Discussion 1
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CCommunity
⇒ 20 cows or 30 goats can eat grass for 1 day from field
⇒ 30 goats will eat grass for 1 day
⇒ 1 goat will eat grass for 30 days
⇒ 20 cow = 30 goats
⇒ 1 cow = (30/20)
⇒ 1 cow = 3/2
⇒ Let x day for 8 cow and 12 goats same field will be sufficient
⇒ 8 cow + 12 goats = 8 (3/2) + 12
⇒ 8 cow + 12 goats = 24 goats
⇒ 1 goat will eat grass for 30 days
⇒ 24 goats will eat grass for (30/24)
⇒ 24 goats will eat grass for (11/4 days)
∴ 8 cows and 12 goats eat grass for (11/4 days)
⇒ 30 goats will eat grass for 1 day
⇒ 1 goat will eat grass for 30 days
⇒ 20 cow = 30 goats
⇒ 1 cow = (30/20)
⇒ 1 cow = 3/2
⇒ Let x day for 8 cow and 12 goats same field will be sufficient
⇒ 8 cow + 12 goats = 8 (3/2) + 12
⇒ 8 cow + 12 goats = 24 goats
⇒ 1 goat will eat grass for 30 days
⇒ 24 goats will eat grass for (30/24)
⇒ 24 goats will eat grass for (11/4 days)
∴ 8 cows and 12 goats eat grass for (11/4 days)