Question
Which of the following “signs” are placed in place
of “symbols” given in equation to make the equation true? 8 @ 24 # 12 + 51 × 3 ÷ 8.5 & 39 $ 17Solution
8 @ 24 # 12 + 51 Ă— 3 Ă· 8.5 & 39 $ 17 8 Ă· 24 Ă— 12 + 51 Ă— 3 Ă· 8.5 = 39 - 17 4 + 18 = 22 22 = 22
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A boat can cover 120 km in upstream in 6 hours and 180 km in downstream in 3 hours. Find the speed of the stream.
Ratio of speed of boat in downstream and speed of stream is 7:5, if speed of current is 5 km/hr, then find distance travelled (in km) upstream in 4 hours.
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