Question

A roll of 50 pennies has a mass of 125 grams. What is the value of 1,000 grams of pennies?

$4.00
$3.50
$5.00
$8.00
$4.50

Answer 1

$4.00

Explanation:

make a proportion

50/125=x/1000

1000(50/125)=x

8(50)=x

400=x

400pennies=$4.00

or solve like this

50/125= 0.4 pennies per gram (p/g)

0.4p/g

0.4p/g*1000g=400p=$4.00