Let's say Arielle's age is x
The sum of Elvie's age and Arielle's age is 10+x
The product of their ages is 10*x
The total for the sum and product of their ages is 10+x+10*x = 131
To find Ariel's age, we evaluate x, which is 10+11x = 131
This gives us a total of 11x=121
Arielle's age is x=121/11
The value of x, which is Arielles's age, is 11
#### 11