Question

Ravi earns Rs. 12,000 per month. Out of this he spends 60% on buying petrol for his car. How much does he save every month?

Answer 1

Hint: First of all find the total expenditure of Ravi in buying petrol for his car every month by calculating the value of 60% of his monthly salary. Now, to find the total monthly savings of Ravi, subtract the obtained monthly expenditure on petrol from his total salary to get the answer.

Complete step by step answer:
Here we have been provided with the monthly income of Ravi and his monthly expenditure on buying petrol for his car. We have to calculate his monthly savings.
Now, it is given that Ravi spends 60% of his monthly salary which is Rs. 12,000 on buying petrol for his car, so we have,
$\Rightarrow $ Monthly expenditure of Ravi on petrol = 60% of Rs. 12,000
$\Rightarrow $ Monthly expenditure of Ravi on petrol = \[\dfrac{60}{100}\times 12000\]
$\Rightarrow $ Monthly expenditure of Ravi on petrol = Rs. 7,200
Therefore, Ravi spends Rs. 7,200 monthly on petrol so the monthly saving of Ravi will be the difference of the expenditure and the total monthly income. So we have,
$\Rightarrow $ Monthly saving of Ravi = Rs. 12,000 – Rs. 7,200
$\therefore $ Monthly saving of Ravi = Rs. 4,800
Hence, Ravi saves Rs. 4,800 every month.

Note: Note that there can also be a different approach to solve the question. What you can do is find the monthly percentage savings of Ravi by subtracting 605 from 100%. Now, to find his monthly savings find the value of 40% of his monthly income which is Rs. 12,000 to get the answer. We are not provided with any other expenditure of Ravi so we need to consider only his expenditure on petrol.