exam Maths Puzzle Numerical Ability

find the mean and the median
-7,-1,3,9,10,16

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exam Other Question

the numerator of a certain fraction is 2 more than the denomenator. if 1/3 is added to the fracgion, the result is 2. find the fraction Business and finance. The electricity costs of a business decreased from $12,000 one year to $10,920 the next. What is the rate of decrease?