Question

43. Rohit gets a monthly salary of Rs. 18000 per month. He spends 5th part on
petrol, 5th part for domestic expenses and th part on bank instalment and
saves the remaining amount. How much amount does he save ?
(1) Rs. 2000 (2) Rs. 8000 (3) Rs. 4400 (4) Rs. 9000​

Answer 1

The amount Rohit saves after spending amount on petrol, domestic expenses and the bank installment is Rs. 7200.

• Given,
• Rohit gets a monthly salary of Rs. 18000 per month.
• He spends $\frac{1}{5}*18000$ on petrol  
• He spends $\frac{1}{5}*18000$ on domestic expenses  
• He spends $\frac{1}{5}*18000$ on bank installment (assumption)
• Let x be the amount saved by Rohit
• The total amount saved by Rohit
• $\dfrac{1}{5}*18000+\dfrac{1}{5}*18000+\dfrac{1}{5}*18000+x=18000\\18000(\dfrac{1}{5}+\dfrac{1}{5}+\dfrac{1}{5})+x=18000\\x=18000-18000(\dfrac{1}{5}+\dfrac{1}{5}+\dfrac{1}{5})\\x=18000-18000(\dfrac{3}{5})\\x=18000(1-\dfrac{3}{5}\\x=18000*\dfrac{2}{5}\\x=7200$

Answer 2

Answer:

The money saves by Rohit after all expenses is Rs 9216 .

Step-by-step explanation:

Given as :

Monthly salary of Rohit = Rs 18000 per month

The money spend on petrol = $\dfrac{1}{5}$ th of salary

Or, The money spend on petrol = $\dfrac{1}{5}$ × rs 18,000

Or, The money spend on petrol = Rs 3600

So, The left amount after spend on petrol = rs 18,000 - rs 3600 = rs 14,400

Again

The money spend on domestic expenses = $\dfrac{1}{5}$ th of remaining

Or, The money spend on domestic expenses = $\dfrac{1}{5}$ × rs 14,400

Or, The money spend on domestic expenses = rs 2880

So, The left amount after spend on domestic expenses = rs 14,400 - rs 2880 = rs 11,520

Again

The money spend on bank installment = $\dfrac{1}{5}$ th of remaining

or, The money spend on bank installment = $\dfrac{1}{5}$ × rs 11,520

or, The money spend on bank installment = rs 2304

So, The left amount after spend on bank installment = rs 11520 - rs 2304 = rs 9216

So, the saving amount after all expenses = Rs 9216

Hence, The money saves by Rohit after all expenses is Rs 9216 . Answer