Answer:
1 5/16
Step-by-step explanation:
subtract 1 3/4 from 3 1/16
a) {4,5,6,7,8,9,10}
b) {1,2,3,4,5}
c) {4,5,6}
1 hour and 20 minutes
45+25+10=80 minutes which equal 1 hour and 20 minutes