From a water tank 100 litres of water used every day.after 10 days there is 2000 litres in tank. How much water before 10 days
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Step-by-step explanation:
the water used from the tank in one day= 100litres
the water used from the tank in ten days= 100*10= 1000
water left in the tank after ten days = 2000litres
water in the tank before ten days = 1000+2000=3000litres
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