Answer: 
Step-by-step explanation:
Given
Speed of boat 



Answer: 1/0
Step-by-step explanation: the reciprocal of a number is simply found by switching the place of the numerator and denominator. so the reciprocal of 0 or 0/1 is 1/0
Answer: 2*200-321+67=56-65? look at the picture
Step-by-step explanation: Hope this help :D
Answer:
10.439 Km
Step-by-step explanation: