Question

the sum of the digit of a two digit number is 4 the number got by inter changing the digit is 18 less than the original number. what is the number
what are the length of AC, Ad and AE
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Answer 1

Answer:

THE ORIGNAL NUMBER IS 31

Step-by-step explanation:

LET THE NUMBER BE xy

SO,

x+y=4

x=4-y

SO,

A.T.Q.,

xy = yx + 18

10(4-y)+y=10y+(4-y) + 18

40-10y+y = 10y-y+4+18

40-9y=9y+22

40-22=9y+9y

18=18y

y=1

x=4-y

x=4-1

x=3

SO,

THE ORIGNAL NUMBER WAS xy WHICH IS 31

I HOPE YOU UNDERSTOOD THE QUESTION