Mathematics · Pedagogy of Mathematics
Compare the following problems: (A) If 3 US dollars is equal to 180 Indian rupees, then how many Indian rupees are equal to 21 US dollars? (B) Zoya and Rajni are running equally fast on a circular track. Zoya started first and when she had run 9 laps, Rajni had run 3 laps. By the time Rajni had run 15 laps, how many laps had Zoya completed? Which of the following statements is true?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Both A and B are not problems related to proportional understanding.
- 2B is a problem based on proportions, whereas A will require the knowledge of addition and subtraction.
- 3A is a problem based on proportions, whereas B will require the knowledge of addition and subtraction.✓
- 4Both A and B will require the understanding of proportions to solve.
Correct answer
A is a problem based on proportions, whereas B will require the knowledge of addition and subtraction.
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