Can anyone please explain me this.
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Answered by
1
Answer:
You will have to use unitary method for this kind of sums.
Answered by
1
Answer:
b) 11 minutes
Step-by-step explanation:
No. of minutes taken to saw 4 pieces of wood = 3 minutes
No. of minutes taken to saw 1 piece of woods = 3/4 minutes
= 40 seconds
No. of minutes taken to saw 15 pieces of wood = 3/4 x 15
= 45/4
= 11 minutes 15 seconds
= b) 11 minutes
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