If two impairments are 10% and 5%, what is the combined rating using the greatest plus half of the lesser?

If two impairments are 10% and 5%, what is the combined rating using the greatest plus half of the lesser?

• A. 15%
• B. 13%
• C. 12%
• D. 10%

Answer: (B)

To combine impairments, take the larger rating and add half of the smaller one, then round to the nearest whole percent. Here, the larger impairment is 10% and the smaller is 5%. Half of the smaller is 2.5%. Add: 10% + 2.5% = 12.5%. Rounding to the nearest whole percent gives 13%. So the combined rating is 13%.

To combine impairments, take the larger rating and add half of the smaller one, then round to the nearest whole percent. Here, the larger impairment is 10% and the smaller is 5%. Half of the smaller is 2.5%. Add: 10% + 2.5% = 12.5%. Rounding to the nearest whole percent gives 13%. So the combined rating is 13%.