The ratio of the monthly incomes of A and B is 11: 13 and the ratio of their expenditures is 9: 11. If both of them manage to save ₹4,000 per month, then find the difference in their incomes (in ₹).
Let, the monthly income of A = 11x The monthly income of B = 13x The monthly expenditures of A = 9y The monthly expenditures of B = 11y So, 11x - 9y = 4000 .....(1) 13x - 11y = 4000 .....(2) (1) × 11 - (2) × 9 gives, 121x - 99y - 117x + 99y = 44000 - 36000 ⇒ 4x = 8000 ⇒ x = 8000/4 = 2000 ∴ A's income = 11 × 2000 = Rs. 22000 ∴ B's income = 13 × 2000 = Rs. 26000 The difference of income = 26000 - 22000 = Rs. 4000 Alternate method The difference = 2 ratio = Rs. 4000 Their income difference = 13 - 11 = 2 ratio ∴ Income difference = Rs. 4000 ∴ The difference between A and B's incomes (in Rs.) is Rs. 4000
Which file are contents readymade styles that can be used for a word document?
A storage device or medium where the access time is dependent upon the location of the data is called
What is the shortcut key to ‘refresh the current web page ’?
What is the name for an application that changes a human-readable programming language into a machine-readable language?
.......... is the key we use to run the selected command.
Which of the following is the slowest Internet connection?
A file which has not been altered, compressed, or manipulated in any way by the computer is called?
Term hub is related to which of the following topology?
What keyword is used in Java to manually bring in the exceptions?
The term "Zipping" a file encompasses: