9. a) Mr Ghimire spends $$ \frac{7}{10} $$ parts of his income every month which amoumis to Rs 28000 . (i) Find his income every month. (ii) How much does he save in a year?

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Given:
- Mr. Ghimire spends $$ \frac{7}{10} $$ parts of his income every month, which amounts to Rs 28000.

Let's denote:
- $$ x $$ as Mr. Ghimire's income every month.

We know that $$ \frac{7}{10} $$ of his income is Rs 28000, so we can set up the equation:
$$ \frac{7}{10}x = 28000 $$

To find his income every month, we need to solve for $$ x $$.

Let's solve for $$ x $$ using the equation above.
Solve the equation by following steps:
- step0: Solve for $$x$$:
  $$\frac{7}{10}x=28000$$
- step1: Multiply by the reciprocal:
  $$\frac{7}{10}x\times \frac{10}{7}=28000\times \frac{10}{7}$$
- step2: Multiply:
  $$x=40000$$
The solution to the equation $$ \frac{7}{10}x = 28000 $$ is $$ x = 40000 $$.

So, Mr. Ghimire's income every month is Rs 40000.

Now, to find out how much he saves in a year, we need to calculate the amount he saves in a month and then multiply it by 12 (the number of months in a year).

Let's calculate the amount he saves in a month first.
Calculate the value by following steps:
- step0: Calculate:
  $$40000-28000$$
- step1: Subtract the numbers:
  $$12000$$
Mr. Ghimire saves Rs 12000 in a month.

To find out how much he saves in a year, we multiply the monthly savings by 12 (the number of months in a year).

Let's calculate the annual savings.
Calculate the value by following steps:
- step0: Calculate:
  $$12000\times 12$$
- step1: Multiply the numbers:
  $$144000$$
Mr. Ghimire's income every month is Rs 40000, and he saves Rs 12000 in a year.

9. a) Mr Ghimire spends \( \frac{7}{10} \) parts of his income every month which amoumis to Rs 28000 . (i) Find his income every month. (ii) How much does he save in a year?

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