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6 cows can graze a field in 28 days. How long would 21 cows take to graze the same field?
  • a)
    6 days
  • b)
    8 days
  • c)
    7 days
  • d)
    12 days
Correct answer is option 'B'. Can you explain this answer?
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6 cows can graze a field in 28 days. How long would 21 cows take to gr...
If x is required no. of days then
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6 cows can graze a field in 28 days. How long would 21 cows take to gr...
If x is required no. of days then
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Community Answer
6 cows can graze a field in 28 days. How long would 21 cows take to gr...
We know that time and work are in inverse proportion so
let x b the number of days 21 cows will take to graze the field...
6/21=x/28
=>6×28= 21x
=> x= 168/2
=> x= 8
option b is the correct answer
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