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Question 31.

  • Total number of pages in the book = 416

Question 32.

  • Measure of the angle will be 60°

Question 33.

  • Angle a = 65°

  • Angle b = 55°

  • Angle c = 60°

Question 34.

decrease in consumption :

  • [tex] \dfrac{y}{5} [/tex]

decrease percentage in consumption :

  • [tex] (\dfrac{y}{5} \div y) \times 100[/tex]

  • [tex] \dfrac{1}{5} \times 100[/tex]

  • [tex]20 \%[/tex]
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