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Question
An adult takes 50 seconds to complete one task. On the other hand, a child takes 3 minutes to complete the same task. What is the ratio of time taken by adult to time taken by child to complete the task?
An adult takes 50 seconds to complete one task. On the other hand, a child takes 3 minutes to complete the same task. What is the ratio of time taken by adult to time taken by child to complete the task?
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Solution
The correct option is A 5:18
Time taken by the adult to complete the task = 50 seconds
Time taken by the child to complete the task = 3 minutes
When we compare two ratios, their units should be the same.
1 minute = 60 seconds
3 minutes = 3 × 60 = 180 seconds
Required ratio = 50 : 180
Writing this ratio in its simplest form,
(5 × 10) : (18 × 10) = 5 : 18
Time taken by the adult to complete the task = 50 seconds
Time taken by the child to complete the task = 3 minutes
When we compare two ratios, their units should be the same.
1 minute = 60 seconds
3 minutes = 3 × 60 = 180 seconds
Required ratio = 50 : 180
Writing this ratio in its simplest form,
(5 × 10) : (18 × 10) = 5 : 18
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