Question

In Store A the price of mayonnaise went

down from $5.82 to $5.23. In Store B, it
went from $8.77 to $2.43. In Store C it
went from $8.71 to $3.64. What was the average decrease?

Answer 1

$4

Explanation:

In Store A the price of mayonnaise went down from $5.82 to $5.23.

Total decrease in mayonnaise price in Store A = $5.82-$5.23 = $0.59

In Store B the price of mayonnaise went down from $8.77 to $2.43.

Total decrease in mayonnaise price in Store A = $8.77-$2.43 = $6.34

In Store C the price of mayonnaise went down from $8.71 to $3.64.

Total decrease in mayonnaise price in Store A = $8.71-$3.64 = $5.07

Cumulative decrease in mayonnaise price across all stores:

$0.59 + $6.34 + $5.07 = $12

Average decrease in mayonnaise price across all stores =
`\[(12)/(3)\]`

= $4