Monthly average expenditure of a family with $4$ members is $R s 2, 800$ . Find the monthly average expenditure of a family with only $3$ members.

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Solution

Monthly expenditure of a family with $4$ members $= R s .2800$
Monthly expenditure of a family with $1$ member $= \frac{2800}{4} = R s . 700$
Therefore,
Monthly expenditure of a family with $3$ members $= 700 \times 3 = R s . 2100$

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Monthly average expenditure of a family with 4 members is Rs 2,800. Find the monthly average expenditure of a family with only 3 members.

Monthly expenditure of a family with 4 members =Rs.2800Monthly expenditure of a family with 1 member =28004=Rs.700Therefore,Monthly expenditure of a family with 3 members =700×3=Rs.2100

Monthly average expenditure of a family with $4$ members is $R s 2, 800$ . Find the monthly average expenditure of a family with only $3$ members.

Monthly expenditure of a family with $4$ members $= R s .2800$
Monthly expenditure of a family with $1$ member $= \frac{2800}{4} = R s . 700$
Therefore,
Monthly expenditure of a family with $3$ members $= 700 \times 3 = R s . 2100$