1.

Incomes of X and Y are in the ratio 7 ∶ 8. Their expenditures are in the ratio 4 ∶ 5. If both save Rs. 960 at the end of the month, then what is the income (in Rs) of X?1). 22402). 25603). 12804). 1600

Answer»

LET the INCOMES of X and Y be 7A and 8A

Let the expenditures of X and Y be 4b and 5B.

Then the income of both will be,

⇒ 7a = 4b + 960----(1)

⇒ 8a = 5b + 960----(2)

By solving the above equation, we get

a = 320 and b = 320

The income of X = 7a = 7 × 320 = 2240.


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