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GATE2017-58

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In the summer, water consumption is known to decrease overall by $25\%$. A Water Board official states that in the summer household consumption decreases by $20\%$. While other consumption increases by $70\%$.

Which of the following statements is correct?

  1. The ratio of household to other consumption is $8/17$
  2. The ratio of household to other consumption is $1/17$
  3. The ratio of household to other consumption is $17/8$
  4. There are errors in the official‘s statement
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