Question

You are an office manager and need to get the mail out by 3:00 P.M. each day. To do this you need 30 minutes to write checks, 20 minutes to prepare envelopes and 15 minutes to apply postage. What time is the latest you could start working on the mail to meet your deadline?

Answer 1

1:55 is the answer because 30+20+15=1 hour and 5 min, so you subtract that from 3:00