Question

45 cows can graze a feild in 12 days. How many cows will graze the same feild in 9 days ?
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Answer 1

Answer:

60

Step-by-step explanation:

Let the required no. of cows be X.

It is a case of inverse variation as no. of days will be reduced the no. of cows will be increased to graze the same field.

45x12=9xX

X=45x12/9

X=60

So, 60 cows will be required to graze the field in 9 days.

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Answer 2

Step-by-step explanation:

in 12 days a field can graze 45 cows

in 1 days a field can graze 45 *12 cows

in 9 days a field can graze 45 *12/9 cows

=60 cows