A number of miles driven this month was 30% decrease of the number of miles driven last month?

70 miles were driven this month

Step-by-step explanation:

suppose 100 miles were driven last month

30% = 30/100*100=30 miles

30% decreasewould be 100-30 = 70 miles

70 miles driven this month

Step-by-step explanation:

This is an algebra problem and denote A number of miles driven this month as x to be found

30 % decrease of x number of miles for this month last month miles driven = 100 % then 100 % / 100% * 100 miles = 100 miles thus this month = 100 % - 30 % = 70 % then for this month in miles = 70 % / 100 % * 100 miles = 70 miles