Mathematics
NULL
Medium
Question
10 bulls plough 20 identical fields in 3 days at 10 hours/day. In how many days can 30 bulls plough 32 such fields at 8 hours/day?
A
2
✓ Official correct answer
B
8
C
10
D
12
Community credibility
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A
2
No member explanations yet for this option.
B
8
No member explanations yet for this option.
C
10
No member explanations yet for this option.
D
12
No member explanations yet for this option.
Explanation
Bull-hours scale: days = (10 × 3 × 10 × 32)/(20 × 30 × 8) = 2.