Jordan went swimming for 78 hour in the morning and 56 hour in the afternoon.
What is the best estimate for the total time Jordan went swimming?
78hour is closest to ______ . 56hour is closest to _______ . Therefore, the best estimate for the total time Jordan went swimming is close to _______ .
A: 0 hours
B: 1/2 hours
C: 1 hour
D: 2 hours
E: 3 hours
