The sum of two numbers of a two-digit number is 10. If the two numbers of this two-digit number are reversed to form a new two-digit number, it will be 72 larger than the original number. Find the original two-digit number.
一个两位数的两个数字之和是10，如果把这个两位数的两个数字对调位置，组成一个新的两位数，就比原数大72，求原来的两位数是多少．
<result>19</result>