Answer:
a=3, b=13, c=23.
Step-by-step explanation:
Let a,b ,c be an integer numbers such that each is less than 25, their mean is 13 and range - 10.
1. Let a<b<c<25;
2. {a+b+c}{3} =13 \\ a+b+c=39
3. c-b=b-a=10.
Then
c=10+b \\ a=b-10 \\ b-10+b+10+b=39 \\ b=13, c=23, a=3.
