There are 30 employees in an office. If the average age of the first 15 employees is half the average age of the rest of the employees. Find the ratio of the average ages of the employees of the two groups after 6 years. The total age of the employees is 1125 years.

Here are some tips for solving ratio and proportion problems: - Read the ratio correctly: For example, 2 pink to 6 red should be expressed as 2:6, not 6:2. - Note the units in your calculations - The ratio between two quantities should be of the same kind - When comparing two ratios, their units must be similar - If the ratios are equal like a fraction, then only comparison of 2 ratios can be performed - In ratio, if both the antecedent and the consequent are multiplied or divided by the same number (except 0) then the ratio will remain the same - Write the ratios in their three... Show more

Here are some tips for solving ratio and proportion problems:
- Read the ratio correctly: For example, 2 pink to 6 red should be expressed as 2:6, not 6:2.
- Note the units in your calculations
- The ratio between two quantities should be of the same kind
- When comparing two ratios, their units must be similar
- If the ratios are equal like a fraction, then only comparison of 2 ratios can be performed
- In ratio, if both the antecedent and the consequent are multiplied or divided by the same number (except 0) then the ratio will remain the same
- Write the ratios in their three different forms
- Set up a proportion
- Cross-multiply to find the missing value 

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