Question

Darren had 20 minutes to do a three problem quiz he spent 10 1/4 minutes on question A and 5 4/5 minutes on question B how much time did he have left for question C

Answer 1

Adding the times on A and B gets you 16 minutes and 3 seconds. 20 minutes minus 16 minutes and 3 seconds will leave you with

3 minutes, 57 seconds