Question

the ratio between incomeand expenses of a person are 7:5. Then ratio between total income and saving
(A) 12:2
(B) 5:2
(C) 2:7
(D) 7:2
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Answer 1

Answer:

Step-by-step explanation:

Solution:

Consider incomes of A = 7x

and that of B= 5x

Consider expenditure of A = 3y

and that of B= 2y

Now Savings = Income - Expernditures

As it is given that both of them Save Rs ‘R’ so their savings is equal

Savings of A = Saving of B

7x - 3y = 5x - 2y

2x = y …………………… 1

Now Savings of A = 7x - 3y = R

Substituting value of y = 2x from 1

7x - 3*2x = R

7x - 6x = R

x = R

y = 2R

Now we can get income of A in terms of R which is

Income of A = 7R