Question

Samies monthly expenses are rs 150 less than his income,if his income increased by rs.100 and expenses decreased by rs 50,how much will he save in a year?

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

The saving amount for this year is Rs 100 .

Step-by-step explanation:

Given as :

Let The initial monthly income of Samies = $I_1$

Let The initial monthly expenditure = $E_1$

Let The initial monthly saving = $S_1$

Now, Since

Income = Expenditure + saving

i.e I = E + S

So, $I_1 = E_1 + S_1$            ............A

According to question

Initial expenditure = Initial income - Rs 150

So, $E_1$ = $I_1$ - 150         ......B

Solving eq A and eq B

$I_1 = E_1 + S_1$  

So,  $I_1$ =  $I_1$ - 150  + $S_1$

Or, $S_1$ = 150 + ($I_1$ - $I_1$)

Or,  $S_1$ = 150 + 0

So, The initial saving amount = Rs 150

Again

The income increase by Rs 100 and Expenditure decrease by Rs 50

∵ Income = Expenditure + saving

So, $I_2 = E_2 + S_2$

A/Q

$I_2$ = 100 + $I_1$

And $S_2$ = $S_1$ - 50

So, The saving amount for this year = $S_1$ - 50

i.e  The saving amount for this year = Rs 150 - Rs 50

Or,  The saving amount for this year = Rs 100

Hence,  The saving amount for this year is Rs 100 . Answer