Question

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

Answer 1

70 miles were driven this month

Explanation:

suppose 100 miles were driven last month

30%= 30/100*100=30 miles

30% decreasewould be 100-30= 70 miles

Answer 2

70 miles driven this month

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