Last week's gas prices at a local gas station decreased by 2% this Monday, but by this current weekend, they have increased by 1%. The current price this weekend is? % of last week's prices before the changes. (Round to the nearest tenth.)
Assuming the last weeks price is 100 then it decrease by 2%
So the price is 100 ( 1 – 0.02) = 98
Then it increase again by 1% so the price would be
98 ( 1 + 0.01) = 98.98
So it is ( 98.98/ 100) x 100 = 98.98 % of the price before
it change
