1. A diver does a dive to 60 feet for 40 minutes. She
wants to do another dive to 50 feet for 50 minutes. What is the
minimum time she must wait before doing this dive?
answer
2. Our diver goes to 83 feet for 18 minutes. She
wants to do another dive to 52 feet for 30 minutes. What is the minimum
surface interval that she must wait before doing this dive?
answer
3. The diver has completed a dive to 52 feet for 44
minutes. After a surface interval of 1:45 she does another dive to 47 feet
for 32 minutes. How long must she wait before she can do her third dive to
38 feet for 50 minutes?
answer