Question

EXERCISE - 4.2
Form a pair of linear equations for each of the following problems a
The ratio of incomes of two persons is 9:7 and the ratio of their
each of them manages to save 2000 per month, find their monthly
Thus,
The sum of a two digit number and the number obtained by reversin
digits of the number differ by 2, find the number. How many such mein elimination method​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

INCOMPLETE Questions

Step-by-step explanation:

Let the income of persons A &  B be 9x and 7x

Since savings is 2000 each,

=> Expenses of A is (9x - 2000) and of B is (7x - 2000)

Since the question has been terminated over here by converting to a new question, this cannot be solved further.

Let x & y be the digits in 10s & units place.

Hence the value of the no. is 10x+y

Reversing the digits, we get the number 10y+x

Difference between them is 2

(10x+y) - (10y+x) = 2

9x-9y = 2

or 9(x-y) = 2

which will NOT give any proper answer.

You have made some mistake in phrasing the questions