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Two angles are supplementary. Twice the smaller angle equals the larger angle minus 30°.
Find the smaller angle.

Class 7Pairs of AnglesLines and Angles
  • A50
  • B100
  • C55
  • D45

Step-by-Step Solution

Let smaller = s, larger = 180 - s. Given 2s = (180 - s) - 30 = 150 - s, so 3s = 150 and s = 50°.
Answer: A) 50

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