A heavy trunk has been lying in Maria's garden since the last week's storm. It can be sawed into two parts in one minute. How long will it take to saw it into 12 equal parts?
Answers
Step-by-step explanation:
12 parts will be sawed in 6minute
Answer:
11 minutes
Step-by-step explanation:
Given :- A heavy trunk has been lying in Maria's garden since the last week's storm. It can be sawed into two equal parts in one minute.
To Find :- Time trunk will take to be sawed it into 12 equal parts.
Solution :-
It is given that trunk is sawed into two equal parts in 1 minute.
In the next 1 minute, one of parts will again be sawed into 2 equal parts.
∴ Total number of parts trunk is in = 2 + 1 = 3
So, in 2 minutes, trunk is sawed into 3 parts.
In the next minute that is in 3rd minute, trunk will be sawed into 3 + 1 = 4 equal parts.
In the 4th minutes, again one of the equal parts will be sawed into 2 equal parts = 4 + 1 = 5 equal parts.
Using the above proportion, we can write that n equal parts of trunk can be done in (n - 1) minutes.
Acc. to the question, n = 12.
Time it will take = 12 - 1 = 11 minutes.
Therefore, trunk will be sawed into 12 equal parts in 11 minutes.
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