Question

please type full answer​

Answer 1

2800+20/100 x 2800 = 3360

3360+50/100 x 3360 = 5040 answer

Answer 2

Given :

Money saved with Sinha : ₹2800

Money spent on hours rent : 20%

Money spent on household : 50%

To find :

The total monthly salary of Mrs.Sinha

Solution :

First, we should find the money left with her before spending for household expenditure.

Let the money left before spending for household expenditure be m.

Money left before household expenditure :

$\sf \dashrightarrow m - 50\% \: of \: m = 2800$

$\sf \dashrightarrow m - \dfrac{50}{100} \times m = 2800$

$\sf \dashrightarrow m - \dfrac{50m}{100} = 2800$

$\sf \dashrightarrow m - \dfrac{1m}{2} = 2800$

$\sf \dashrightarrow \dfrac{2m - 1m}{2} = 2800$

$\sf \dashrightarrow 2m - 1m = 2800 \times 2$

$\sf \dashrightarrow 2m - 1m = 5600$

$\sf \dashrightarrow 1m = 5600$

$\sf \dashrightarrow m = \dfrac{5600}{1}$

$\sf \dashrightarrow m = 5600$

Now, we can find her monthly salary.

Monthly salary of Sinha :

Let the total salary be n.

$\sf \dashrightarrow n - 20\% \: of \: n = 5600$

$\sf \dashrightarrow n - \dfrac{20}{100} \times n = 5600$

$\sf \dashrightarrow n - \dfrac{20n}{100} = 5600$

$\sf \dashrightarrow n - \dfrac{1n}{5} = 5600$

$\sf \dashrightarrow \dfrac{5n - 1n}{5} = 5600$

$\sf \dashrightarrow 5n - 1n = 5600 \times 5$

$\sf \dashrightarrow 5n - 1n = 28000$

$\sf \dashrightarrow 4n = 28000$

$\sf \dashrightarrow n = \dfrac{28000}{4}$

$\sf \dashrightarrow n = 7000$

Hence, Sinha's monthly salary is ₹7000.