A rainwater tank with a capacity of 200 litres is being drained. After 1 minute there is 197.5L left in the tank, after 2 minutes 195L and after 3 minutes 192.5L. How much water is left in the tank after 5 minutes?
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Answer:
187.5 litres
Step-by-step explanation:
given that in 1 minute the water decreased from 200 litre to 197.5 litre
so lets find how much water decreased in 1 minute
=> total water - water remaining after 1 minute
=> 200 - 197.5 = 2.5 ( so each minute 2.5 litre water is draining)
=> in 5 minute water will drain is 5 x 2.5 = 12.5 litre
so water left after 5 minute is 200 - 12.5 = 187.5 litres.
answer 187.5 litres
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