For a two-digit number, the ones digit is 5 greater than the tens digit, and the two-digit number is three times the sum of its digits, what is the two-digit number equal to?
一个两位数，它的个位数字比十位数字大5，且这个两位数是它的数字和的3倍，则这个两位数等于多少．
<result>27</result>