autumn used 0.675 of the battery life on her mp3 player. her brother borrowed it to play a game and used 0.2 of the total battery life. of her mp3 player shows the battery life that remains as a percentage, what does it showed after her brother is finished?
She starts out with the battery 100% full. 0.675 as a fraction is 67.5% Subtract 67.5% from the initial amount. 100% - 67.5% = 32.5% 0.2 as a fraction is 20% Subtract 20% from the amount left: 32.5% - 20% = 12.5%.
She has 12.5% left.
