Question

a box has five books each 20 millimetre thick and 5 cards each 0.016
mm thick what is the total thickness​

Answer 1

Total thickness = Thickness of five books + thickness of 5 cards

=> total thickness = 5×20 + 5×0.016

=> total thickness = 100 + 0.08

=> total thickness = 100.08 mm

$\huge{\bold{100.08 \: mm }}$

Answer 2

Step-by-step explanation:

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