Question

# In a stack, there are $$5$$ books, each of thickness $$20mm$$ and $$5$$ paper sheets each of thickness $$0.016 mm$$. What is the total thickness of the stack.

A
1.0008×102 mm
B
1.0008×103 mm
C
1.0008×104 mm
D
None o these

Solution

## The correct option is A $$1.0008\times {10}^{2}$$ mmGiven: No. Of books = 5 Thickness of each book = 20 mm No.of  paper sheets = 5 Thickness of each paper sheets = 0.016 mm Total thickness of the stack= thickness of 5 books + thickness of 5 paper sheets  = 5 × 20  + 5 x 0.016  = 100 + 0.080  = 100.08 mm  The total thickness of the stack = 1.0008 x $$10 ^2$$ mm Mathematics

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