Question

The average age of lars and hank is 33. The ratio of their ages (lars : hank) is 20:2. What is hank's age?

Answer 1

Answer:

Hank's age is 6 years

Step-by-step explanation:

Let the age of Lars be 20x and age of Hank be 2x  [Ratio is 20:2]

According to question

Average of both's ages = 33

∴ (20x + 2x)/2 = 33   [Average = Sum of observations/number of observations]

22x/2 = 33

11x = 33

x = 3

∴ Hank's age (2x) = 6 years

Answer 2

Answer:

Hank's age is 6 years

Step-by-step explanation:

Let the age of Lars be 20x and age of Hank be 2x  [Ratio is 20:2]

According to question

Average of both's ages = 33

∴ (20x + 2x)/2 = 33   [Average = Sum of observations/number of observations]

22x/2 = 33

11x = 33

x = 3

∴ Hank's age (2x) = 6 years

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