Mrs Rane gives 0.025 part of her salary as pocket money to her son Vinod every month. Vinod spends 0.8 part of his pocket money and saves the rest. If the save Rs. 277.50 in three months, how much does Mrs Rane earn in a month?

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Solution

Let the income per month is $x .$

Money given to Vinod is $0.025 x$

Money saved by Vinod per month is $0.2 \times 0.025 x = 0.005 x$

He saves in three months is $= 3 \times 0.005 x = 0.015 x = 277.5$

$⟹ x = R s . \frac{277.5}{0.015}$

$⟹ x = R s . 18500$

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Mrs Rane gives 0.025 part of her salary as pocket money to her son Vinod every month. Vinod spends 0.8 part of his pocket money and saves the rest. If the save Rs. 277.50 in three months, how much does Mrs Rane earn in a month?

Let the income per month is x.Money given to Vinod is 0.025xMoney saved by Vinod per month is 0.2×0.025x=0.005xHe saves in three months is =3×0.005x=0.015x=277.5⟹x=Rs.277.50.015⟹x=Rs.18500

Let the income per month is $x .$

Money given to Vinod is $0.025 x$

Money saved by Vinod per month is $0.2 \times 0.025 x = 0.005 x$

He saves in three months is $= 3 \times 0.005 x = 0.015 x = 277.5$

$⟹ x = R s . \frac{277.5}{0.015}$

$⟹ x = R s . 18500$