Answer:
1 and 3rd ones
Step-by-step explanation:
What is the problem i cant see it
The answer to this problem is C
72 hours
1600/400=4
so 4 x 18= 72 hours
x=y-1/15
14:15
Step-by-step explanation: By reading the sentence carefully you should be able to get the first number and the second number. The sentence should tell you how to set it up.