According to her running log, Shivani avareged 3.2 miles per week last month and 2.8 miles per week this month. By what percent has here average decreased?

Answer 1

To find the percent decrease in Shivani's average, we can use the percent decrease formula:

Percent Decrease = (Original Value - New Value) / Original Value * 100%

For last month:
Original Value = 3.2 miles/week

For this month:
New Value = 2.8 miles/week

Percent Decrease = (3.2 - 2.8) / 3.2 * 100%
= 0.4 / 3.2 * 100%
= 0.125 * 100%
= 12.5%

Therefore, Shivani's average has decreased by 12.5%.

Answer 2

are you sure?

Answer 3

Apologies for the mistake. To find the percent decrease, we first need to calculate the decrease in average.

Decrease in average = Average last month - Average this month
= 3.2 miles/week - 2.8 miles/week
= 0.4 miles/week

To find the percent decrease, we use the formula:

Percent Decrease = (Decrease in average / Average last month) * 100%
= (0.4 / 3.2) * 100%
= 0.125 * 100%
= 12.5%

Therefore, Shivani's average has decreased by 12.5%.