Mathematics · Ratio and Proportion
Which of the following situations is NOT an example of direct proportionality?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1If 4 candies cost Rs. 5, then 10 candies cost Rs. 12.50.
- 2Ravi's mother's age is currently two times Ravi's age, so when Ravi is 30 years old, his mother will be 60 years old.✓
- 3A car covers 8 km in 3 hours at a constant speed, so it will cover 12 km in 4.5 hours.
- 4The required teacher-to-student ratio is 2 : 30, so for 300 students, there must be 20 teachers.
Correct answer
Ravi's mother's age is currently two times Ravi's age, so when Ravi is 30 years old, his mother will be 60 years old.
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