Calculate the Following Mathematics Answer, I will mark brainliest if i Am satisified and u wrote correct answer.:
The mean length of 7 planks of wood is 1.35m. When an extra plank of wood is added, the mean length of a plank of wood increases to 1.4m. What is the length of the extra plank of wood that was added?
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0
Step-by-step explanation:
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Answered by
1
Answer:
1.75
Step-by-step explanation:
So the overall length of all the planks is 1.35m*7= 9.45m
After adding the new plank the overall added length will be 1.4m * 8 = 11.2m
So the added plank's length is 11.2m - 9.45m = 1.75m
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