A teacher has 3 trays that each contains 215 rings. After combining the rings in all 3 trays, the TOTAL number of rings is closest to
A. 440 rings
B. 770 rings
C. 660 rings
D. 880 rings
E. 550 rings
A. 440 rings
B. 770 rings
C. 660 rings
D. 880 rings
E. 550 rings
