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1. |
A computer monitor uses 180 W in normal operation and 20 W in sleep mode. The computer is on all the 24 hours but is in sleep mode for 18 hours a days. The energy units saved in 30 days are |
A. | 0.54 units |
B. | 86.4 units |
C. | 2.88 units |
D. | 4.8 units |
Answer» C. 2.88 units | |