Two aged Number theory specialists sit at a bar.
Anthony said, "It just occurred to me that when we first met, the square of your age contained the same three digits as the square of my age, just in a different order."
Bradley said, "If you take the square of the sum of our ages when we met and split it into two 2-digit numbers, you'd have my age then and your age now"
1234 split into two 2 digit numbers results in 12 and 34.
let B = Bradley's age now and A = Anthony's age now, B/A = x/y where x and y are positive co prime integers.
c^2 = xy+y
If, on the day he met Bradley, Anthony added c to his age, 2c being smaller than Bradley's age (then). what answer would he arrive at?
This section requires Javascript.
You are seeing this because something didn't load right. We suggest you, (a) try
refreshing the page, (b) enabling javascript if it is disabled on your browser and,
finally, (c)
loading the
non-javascript version of this page
. We're sorry about the hassle.
Quite easy. The numbers 256 and 625 satisfy the requirements. Hence Bradley was 16 then and Anthony is 81 now Their present ages are 72 and 81. (81-25= 56 years have passed, hence Bradley is 16+56= 72 years old now). Hence, B/A= 8/9. Hence, c= 9 or -9. c cannot be 9, as 2c=18 is not less than 16. Hence, c=-9; and the result is obtained by adding Anthony's age then with c: 25+ (-9)= 16..