NCERT Exemplar Solutions
Class 7 - Mathematics - Unit 7: Comparing Quantities - Problems and SolutionsQuestion 120
Class 7 - Mathematics - Unit 7: Comparing Quantities - Problems and Solutions
Question. 120
What's the Error? A student said that the ratios 3/4 and 9/16 were proportional. What error did the student make?
Answer:
48 ≠ 36
Detailed Answer with Explanation:
Cross product check: 3 × 16 = 48, 4 × 9 = 36. Not equal. Hence error.