Question
Download Solution PDFA total of 20 toys of a child are to be put in a box. Every 30 seconds 2 toys are put inside but 1 is thrown out by the child. How much time (in minutes) will it take to put all toys in the box for the first time?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFGiven :- A total of 20 toys of a child are to be put in a box. Every 30 seconds 2 toys are put inside but 1 is thrown out by the child.
Concept used :- Simple addition and subtraction.
Solution :- In first 30 sec. we have 1 toys in the box.
In 1 min we have 2 toys in the box.
In similar fashion, in 9 min. we have 18 toys in the box.
But next 30 sec. makes the box full with 20 toys.
Hence it takes 9.5 min.
Last updated on Jun 22, 2025
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