Question
Two boats X and Y start towards each other from two
places, 155 km apart. Speed of the boat X and Y in still water are 14 km/hr and 17 km/hr respectively. If X proceeds down and Y up the stream, they will meet after.Solution
Let the speed of the stream be x km/hr and both the boats meet after t hours According to the question, ⇒ (14 + x) t + (17 – x) t = 155 ⇒ 14t + 17t = 155 ⇒ 31t = 155 ⇒ t = 155/31 = 5 hours
A $ B means A X B, A & B means A - B, A % B means A ÷ B and A # B means A + B, then what is the value of 320 & 80 # 120 % 24 $ 50?
Statements:
V ≤ P < S = B; T < U ≤ I = B; N < J < T
Conclusions:
I. J > P
II. N < S
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