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
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Step-by-step explanation:
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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
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