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Measurement (Pri-6)

/ Volume of Liquids Yumin Primary School / Homework (2018)
Tank X was empty. Tank Y was filled with water to the brim. Then, Tap A Do not write was turned on to fill Tank X and Tap B was turned on to drain water from in this spac Tank Y. Both taps were turned on at the same time with water flowing at the same rate of 2.8 litres per minute. How long did it take for the height of water to be the same in both tanks? Tap A 70 cm 34 cm Tap B #20 cm 14 cm 50 cm ←50 cm Tank X Tank Y
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September 12, 2018
 
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Flow rate (F) = Volume (V)Time (T)  ->   T = VFFlow rate = 2800 cm3/min. Same height = h.Time taken is the same for both tanks when they reach same height. ---T = (50 × 14 × h)2800 = (50 × 20) × (34 - h)2800->  700h = 34000 - 1000h1700h = 34000h = 20cm---T = 50 × 40 × 202800 = 5 min   (ans)
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Sep 12, 2018 07:58 AM
For Tank Y it is (34 - h) because that is the amount of water to drain out.
September 12, 2018
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