For the past m days, the average daily production at a company was 100 units per day. If today's production of 180 units...

Question

For the past m days, the average daily production at a company was 100 units per day. If today's production of 180 units changes the average to 110 units per day, what is the value of m?

A. 16  B. 10  C. 7  D. 5

Accepted Answer

m = 7 The average over the first m days was 100 units/day, giving a total of 100m units. Adding one more day with 180 units raises the average over (m+1) days to 110 units/day. Setting up this equation lets us solve for m directly.