suppose take fathers as 10x+y and sons age would be 10y+x
given a year ago fathers age is equal to 2*sons age
10x+y-1=2(10y+x-1)
x=(19*y-1)/8
then when x=7 the equation satisfies
so answer is 73 fathers age
and sons age in 37
2 variable 1 equation
Hit and trial method
47 Impossible problem!
Find a four digit number whose digits will be reversed when multiplied by nine?
45
26
2178
5037 = 248 = 3059
192
The number you are looking for is 12. Reversing the digits gives you 21 75% of 12 is 9 12 + 9 = 21
100000 2847239582
81.
24 is the number because 2 + 4 = 6 and 24 ÷ 6 = 4 Reveres the digits and you get 42 which is 6 less than 48 which is 24 x 2.
Reversed thought is stating the same thought twice within a sentence, but reversing it the second time. The examples below may clarify this idea. EX: I find what I lose and I lose what I find. EX: I am what I'm not and I'm not what I am. EX: I don't like skunks and skunks don't like me.