Seven times a two-digit number equals four
times the number with digits reversed. Find
the number, if the sum of its digits is 3.
Answers
Answered by
1
Step-by-step explanation:
Let the given number be x at tenths place and y at ones place
Therefore the number will be = (10x+y)
According to the question
7(10x+y) = 4(10y+x)
70x +7y = 40y+ 4x
66x = 33y
2x=y
x = y/2
It is given that the sum of them is 3.
x+y = 3
Putting the value of x
y/2+y= 3
Therefore y= 2 and x= 1
Hence the original number is 12 and the reversed number be 21
Similar questions