Question

last season a pitcher had an earned run average of 2.80 and allowed 70 earned runs how many innings did the pitcher pitch last season ( show work please or dont answer it at all )

Answer 1

The average = 2.80 [which is the mean]
Number of earned runs = 70 [which is number of data]

Mean = Sum of values ÷ Number of values
2.80 = Sum of values ÷ 70
Sum of values = 70 × 2.80
Sum of values = 196

Number of innings = 196