Question

The average age of Lars and Hank is 30. The ratio of their ages (Lars : Hank) is 10:5. What is Hank's age?

Answer 1

10+5=15
Lars=30×10\15
=2×10
=20

Hank=30×5/15
=2×5
=10

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

PLEASE MARK AS BRAINLIEST