Demola is two years older than Deji and Tobi is half of Demola's age. The sum of their ages is 23. How old is Deji​

answer is in the picture

4 and 5)16.97 or 12√2

6)15.59 or 9√3

7)y = 15.59 or 9√3     x =27

8)17.80

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.