1. A sculptor starts carving a block of marble weighing 140kg. After one week he has chipped away one-tenth of the marble. After the second week, he has chipped away a further two-thirds and in the final week he has chipped away 20 percent of what he has left, by which time his work is finished. What is the weight of the final statue?
Answers
Answer:
Step-by-step explanation:
The weight of the final statue is 33.6 kg
Given : A sculptor starts carving a block of marble weighing 140kg.
After one week he has chipped away one-tenth of the marble.
After the second week, he has chipped away a further two-thirds and
in the final week he has chipped away 20 percent of what he has left,
To Find : the weight of the final statue
Solution:
Starting Weight = 140 kg
Weight chipped in first week = (1/10)140 = 14 kg
Weight Remaining after first week = 140 - 14 = 126 kg
Weight chipped in second Week = (2/3) 126 = 84 kg
Weight Remaining after second week = 126 - 84 = 42 kg
Weight chipped in final week = (20/100)42 =8.4 kg
Weight Remaining after final week = 42 - 8.4 = 33.6 kg
the weight of the final statue is 33.6 kg
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