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A school water tank had 400 litres in the morning and 340 litres at lunch time. By what percent did the water decrease?

Class 7Percentage Increase and DecreaseComparing Quantities
  • A15%
  • B85%
  • C17.6%
  • D60%

Step-by-Step Solution

Decrease = 60 L. . (85% is what is left; 17.6% divides by 340.)
Answer: A) 15%

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