Question

the diameter of a U.S penny is 3/4 inch. how many pennies would it take to make a row 42 inches long?

Answer 1

42 divided by 3/4 equals 56 pennies

Answer 2

Answer: 56

Step-by-step explanation:

We are given that ,

The diameter of each U.S. penny = $\dfrac{3}{4}$ inch.

The length of the row of pennies = 42 inches

Then , the number of pennies in that row will be :

$=\text{Length of row}\div\text{Diameter of each penny}\\\\=42\div\dfrac{3}{4}\\\\=42\times\dfrac{4}{3}\ \ \text{[Flip divisor fraction, multiply the original number by its reciprocal.]}\\\\=56$  

Hence, the required number of pennies. = 56