The scores of the first 6 competitors in a
contest have a mean of 28 points
When the 7th competitor is included the
mean decreases to 27 points.
How many points did the 7th competitor
score?
do u get it? 1. U need to find the total of first 6 competitors scores by multiplying 6 by 28. 2. Then, find the total of all 7 competitors scores by multiplying 7 by 27. 3. Then, just subtract the values.
