Mathematics · Ratio and Proportion
Which of the following is NOT an example of proportionality?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The ratio of number of teachers to that of students in a school has to be 2 : 30, so for 300 students, there has to be 20 teachers.
- 2A car covers 8 km in 3 hours at a constant speed, it will cover 12 km in 4.5 hours.
- 3Ravi's mother's age is two times that of Ravi's age at present, so when Ravi will be 30 years old, his mother will be 60 years old.✓
- 44 candies cost Rs. 5, and so 10 candies cost Rs. 12.50
Correct answer
Ravi's mother's age is two times that of Ravi's age at present, so when Ravi will be 30 years old, his mother will be 60 years old.
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