Question

After spending 75% of his monthly income , Rohan saves Rs. 3,780. Find his monthly income​

Answer 1

Answer:

Monthly income = rs. 20000

Step-by-step explanation:

His monthly income = Rs 20000

Explanation:

Let the monthly income = Rsx

Savings = Rs5000

=>(100 - 75)% of income=5000

=> 25% × x = 5000

=> (25/100)x = 5000

=> x = (5000×100)/25

=> x = 200×100

=> x = Rs 20000

Therefore,

His monthly income (x) = Rs 20000

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Answer 2

Answer:

Monthly income of Rohan is Rs. $15120$.

Step-by-step explanation:

Given : Monthly spending = $75$%

          Monthly saving = Rs. $3780$

To find : Rohan's monthly income = ?

Solution :

• It is given that Rohan spend $75$% of his monthly income.

             he saves Rs. $3780$ monthly.

• We have to find out Rohan's monthly income.
• Let, $x$ be the Rohan's monthly income.
• To calculate, Rohan's monthly income, we have a formula

       $75$% of $x+3780=$$x$

          ∴   $\frac{75}{100} *x+3780 = x$

• Equating the denominator, we get

                ∴  $\frac{75x+378000}{100} = x$

           ∴   $75x+378000=100x$  

                     ∴ $100x-75x=378000$

                               ∴ $25x = 378000$

                                  ∴ $x =\frac{378000}{25}$

                                  ∴ $x=15120$

• ∴ Monthly income of Rohan is Rs. $15120$.