Answer :
Thu is 28 and tuan is 23
Explanation: you subtract 5 from 51 to get 46 then divide it by 2 to get tuan’s age which is 23 then add five to get thu’s age which is 28
Explanation: you subtract 5 from 51 to get 46 then divide it by 2 to get tuan’s age which is 23 then add five to get thu’s age which is 28