Mathematics
NULL
Medium
Question
Keeping 20 cows and 40 goats for 10 days costs Rs.460. If 5 goats cost the same as 1 cow to keep, what is the cost of 50 cows and 30 goats for 12 days?
A
Rs.1104
✓ Official correct answer
B
Rs.1000
C
Rs.934
D
Rs.1210
Community credibility
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A
Rs.1104
No member explanations yet for this option.
B
Rs.1000
No member explanations yet for this option.
C
Rs.934
No member explanations yet for this option.
D
Rs.1210
No member explanations yet for this option.
Explanation
5 goats ≡ 1 cow, so 20c + 40g ≡ 28 cow-units for 10 days = 460. Required: 50c + 30g ≡ 56 cow-units for 12 days ⇒ (56×12)/(28×10) × 460 = Rs.1104.