Question

2.35 cm thick books are stacked one over another. If the height of the stack is 42.3 cm, find the number of
books in the stack.​

Answer 1

Given : Thickness Of one book = 2 . 35 cm

Total Heights = 42 . 3 cm

Find : Number Of Book Stack

Solutions : Number Of Book = Total Heights / Thickness

Number Of Book = 42 . 3 / 2 . 35

Number Of Book = 18 cm

The Number Of Book in the Stack is 18 cm

Answer 2

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Number of Books = $\frac{Total\:Height \:of\:books} {Thickness of books}$

Number of Books = $\frac{42.3}{2.35}$

Number of Books = 18

$\therefore$ There are $\sf\red{18}$ books in the stack.