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Directions: Read the below passage and a...

Directions: Read the below passage and answer the questions that follow:
Boat A is going ___(1) __ at a speed of ___(2) __ km/hr from point A in a stream of speed ___(3) __ km/hr thus the speed of boat in still water is ___(4) __ km/hr. After travelling a distance of ___(5) __ in ___(6)__ hours it reaches point B it turns around and reaches the starting point in ___(7) __ hours. When the boat A leaves point A, boat B at point B starts travelling ___(8) __.
If (1) is downstream, (4) is 24 and (3) is 4. With (5) being 224 km and while coming back (4) decreased by 4 km/hr, what is the value of (6) + (7)?

A

`17 1/3 hours`

B

`20 8/15` hours

C

`18 1/5` hours

D

22 hours

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