Question

In a certain month, Kiran spent 70% of his monthly salary. Of the remaining
amount he spent 55% of the money on CDs and one third of the remaining
on notebooks. He saved Rs.225 that month which was 1096 of what he had
after spending on CDs and notebooks. Find his monthly salary (in Rs.).​

Answer 1

Answer:

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Answer 2

Answer:

The monthly salary of Kiran is estimated to be 2500 Rupees.

Step-by-step explanation:

Let us consider the monthly salary of Kiran to be 100%

It is mentioned that he spent 70% already. Hence the remaining amount is 30%.

Out of the 30% he spent;

1. 55% on CD's and
2. 1/3 of remaining on notebooks.

After all expenditure he was left with 225 Rupees.

Calculations:

55% of 30 is 16.5, hence, he had spent 16.5% overall salary on CD's. It can be found out using following mathematical formula:

$\frac{given \: value}{total \: value} \times 100 \: = percentage$

To find the given value we can modify the formula and write it as:

$given \: value = \frac{percentage \times total \: value}{100}$

substituting the known values we get;

$given \: value \: = \frac{55 \times 30}{100}$

$given \: value \: = 16.5$

Hence, 55% of 30% is 16.5%.

Similarly, 45% of 30% is 13.5%.

Now, he had spent 1/3 part of 13.5% on notebooks.

$\frac{1}{3} \times 13.5\% = 4.5\%$

So, he spent 4.5% on notebooks. And remaining 9% he saved, that is 225 Rupees.

Finding the value of 1%.

We know the value of 9%, hence we can directly find the total amount using following formula;

$total \: value = \frac{percentage \times given \: value}{100}$

$total \: value = \frac{9 \times 225}{100}$

$total \: value = 2500$

Hence, the total monthly salary of Kiran is 2500 Rupees.