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Sunita scores 10 marks for every question she answers correctly and loses 5 marks for every wrong answer. She answered 30 questions and scored 150 marks. How many questions did she get wrong?

Class 10Word Problems on Linear PairsAlgebra — Systems of Equations
  • A9
  • B20
  • C11
  • D10

Step-by-Step Solution

. From first .
Answer: D) 10

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