A penny weight 2.5 grams. How many pennies would it take to equal one pound (453.b grams)

Question

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Answer 1

Let N is the number of pennies. Then N is the number of times 2.5 grams goes into 453.6 grams so this is a division problem

 

N = ⌈453.6 / 2.5⌉ = 182

 

Here ⌈ x ⌉ os the least integer n≥x (called the "ceiling of x")

 

We took the ceiling since the floor is 181 pennies which is less than 1 pound.

Answer 2

Hi Maryam,

 

Let's apply our given ratios to get pennies per pound:

    (1 penny / 2.5 grams)(453 grams / 1 pound) 

    (1/2.5)(453/1) = 453/2.5 = 181.2

 

Rounding our answer up to reach 1 pound:

   182 pennies per pound

 

Thanks for submitting this problem and glad to help.

 

God bless, Jordan.