Question

The ratio of incomes of two friends Jasmine and Arman is 9:7 and the ratio of the expenditures is 4 :3 .if each of them saves Rupees 6000 per month find the monthly income also if each of them donates 2% of his income to a charity working for old age destitute find the resulting savings of each what value is indicated from this action

Answer 1

Hello...

Ratio of income = 9 : 7 

let us assume inc. = x

 Jasmin income = 9X

Armaan income = 7X

Ratio of expenditure = 4:3

jasmine expenditure = 4X

Armaan expenditure = 3X

Both savings = 6000 

Jasmine = SAVINGS= 9X -4X
6000= 5X
6000/5= X
X= 1200

9X = 9 * 1200

9X = RS.10800

2 % Donated

So 2% Of 10800 = 216

Final Savings = 6000 - 216

= RS 5784

Armaan 

Savings = 7X - 3X

6000= 4X

6000/4= 1500

X = 1500

7X = 7 * 1500

7X= RS 10500

2% Donated

So 2% Of 10500 = 210

Final Saving= 6000 - 210

=RS 5790

Answer 2

RATIO OF INCOME = 9 : 7 
LET THE INC. = X
 SO JAS INC = 9X
 ARM INC = 7X
RATIO OF EXP = 4:3
SO JAS EXP = 4X
ARM EXP = 3X
BOTH SAVINGS = 6000 (SEPERATELY)
JASMINE
SAVINGS= 9X -4X
6000= 5X
6000/5= X
X= 1200
THEREFORE 9X = 9 * 1200
9X = RS.10800
2 % DONATED 
SO 2% OF 10800 = 216
FINAL SAVINGS = 6000 - 216
= RS 5784
ARMAN 
SAVINGS = 7X - 3X
6000= 4X
6000/4= X
X = 1500
THEREFORE 7X = 7 * 1500
7X= RS 10500
2% DONATED 
SO 2% OF 10500 = 210
FINAL SAVING = 6000 - 210
=RS 5790