a number consist of two digit whose sum is 5. when the digits are reversed,the number become greter by 9. find the number
Answers
Answered by
1
The no. is 23
The reversed no. is 32
The reversed no. is 32
Answered by
2
two numbers are like x,y
which sum x+y=5(I),x=5-y
two digits number=10x+y
when number is reversed that time two digits number =10y+x
but 10x+y=10y+x-9...(ii)
9x-9y=-9
put x value equals(I)
9(5-y)-9y=-9
45-9y-9y=-9
45+9=9y+9y
54=18y
y=3
put y value in equity(I)
x+y=5
x+3=5
x=5-3
x=2
ans:10x+y=10*2+3=23
which sum x+y=5(I),x=5-y
two digits number=10x+y
when number is reversed that time two digits number =10y+x
but 10x+y=10y+x-9...(ii)
9x-9y=-9
put x value equals(I)
9(5-y)-9y=-9
45-9y-9y=-9
45+9=9y+9y
54=18y
y=3
put y value in equity(I)
x+y=5
x+3=5
x=5-3
x=2
ans:10x+y=10*2+3=23
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