 
			 
			MCQOPTIONS
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				| 1. | The formula for difference in elevation can be given as__________ | 
| A. | D = V + (I-R) | 
| B. | D = V + (I+R) | 
| C. | D = V (I-R) | 
| D. | D = V * (I-R) | 
| Answer» B. D = V + (I+R) | |