John is 5 years older than Don and 3 years younger than Dave. If the total sum of their age is 79 how old is Don?

Answer 1

Let's assume Don's age to be x years.
John is 5 years older than Don, so John's age is x + 5 years.
Dave is 3 years older than John, so Dave's age is x + 5 + 3 = x + 8 years.
The sum of all their ages is x + (x + 5) + (x + 8) = 79
Simplifying the above equation, we get 3x + 13 = 79
Subtracting 13 from both sides, we get 3x = 66
Dividing both sides by 3, we get x = 22
Therefore, Don is 22 years old. Answer: \boxed{22}.

Answer 2

A motorcycle was sold at 20% discount.
If the motorcycle was sold for 4000, what was the original price?