Question

A stack of one hundred fifty cards is placed next to a ruler, and the height of the stack is measured to be
3/4 inches.

How thick is one card?

Answer 1

.005 inches is the answer. you just divide 3/4 inches by 150

Answer 2

Answer: One card is 0.005 inches thick.

Step-by-step explanation:

Since we have given that

Number of cards in a stack = 150

Thickness of the stack = $\dfrac{3}{4}\ inches$

So, Thickness of each card is calculated by "Unitary method":

Thickness of 150 cards  = $\dfrac{3}{4}\ inches$

Thickness of 1 card is given by

$\dfrac{3}{4\times 150}\\\\=\dfrac{1}{4\times 50}\\\\=\dfrac{1}{200}\\\\=0.005\ inches$

Hence, One card is 0.005 inches thick.