the ratio of income two person is is 9: 7 and the ratio of their expenditure is 4:3 if each of them manage you to save rupees 2000 per month find their monthly income .
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Answered by
1
Answer:
The answer is 910
Step-by-step explanation:
9+7+4+3=23÷2000=910
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0
7 x - 3 y = 2000
x = 2000 + 3y / 7
9x - 4 y = 2000
9/7 ( 2000+ 3y) - 4y =2000
18000 + 27 y - 28y = 14000
Y = 4000
X = 2000
Income of A = 9x = 18000
Expense of A = 4 y = 16000
Income of B = 7x = 14000
Expense of B = 3y = 12000
x = 2000 + 3y / 7
9x - 4 y = 2000
9/7 ( 2000+ 3y) - 4y =2000
18000 + 27 y - 28y = 14000
Y = 4000
X = 2000
Income of A = 9x = 18000
Expense of A = 4 y = 16000
Income of B = 7x = 14000
Expense of B = 3y = 12000
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