Half of a herd of deer are grazing in the field and three - fourths of the remaining are playing nearby. The rest 9 are drinking water from the pond. Find the number of deer in the herd.

Let the number of deer be *x*.

Number of deer grazing in the field =

Number of deer drinking water from the pond = 9

Multiplying both sides by 8, we obtain

*x* = 72

Hence, the total number of deer in the herd is 72.

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