$$1050\times \frac {70-25}{70} = 675$$ 
A rectangular water tank is filled to a depth of $$70$$cm. It contains $$1050$$ litres of water. Some water is taken out of the tank. The water level drops by $$25$$cm. How much water is left in the tank? 
A. $$625\rm L$$ 
B. $$375\rm L$$ 
C. $$525\rm L$$ 
D. $$270\rm L$$ 
E. $$675\rm L$$ 