A battery that lasts for 12 hours has been in use for 7 hours. What percent of the battery life has been used up?

To find out the percentage of the battery life that has been used up, you can use the formula: (Used Time / Total Time) x 100. In this case, it would be (7 hours / 12 hours) x 100, which equals approximately 58.33%. So, about 58.33% of the battery life has been used up! Now, don’t fret if percentages feel tricky at first! Just remember that you can always break it down into smaller pieces. Even using a calculator or a simple fraction can help! Common mistakes include forgetting to multiply by 100 after calculating the decimal—don’t let that trip you up!