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Average Mass #2 (5 problems)

Find the missing information (x and y) using weighted averages.

General Questions


OBJECT SIZE
MASS OF ONE OBJECT
RELATIVE ABUNDANCE
Small Washer
2.75 g
5/25
Medium Washer
4.38 g
x
Large Washer
5.67 g
7/25
AVERAGE MASS = y
1. 





OBJECT SIZE
MASS OF ONE OBJECT
RELATIVE ABUNDANCE
Quarter
5.73 g
4/31
Dime
2.31 g
17/31
Nickel
4.97 g
x
AVERAGE MASS = y
2. 





OBJECT SIZE
MASS OF ONE OBJECT
RELATIVE ABUNDANCE
Marble
8.13 g
x
Eraser Cap
2.37 g
8/23
Small Screw
5.65 g
3/23
AVERAGE MASS = y   
3. 





OBJECT SIZE
MASS OF ONE OBJECT
RELATIVE ABUNDANCE
Jumbo Paper Clip
2.43 g
x
Thumb Tack
y
9/15
Clothes Pin
9.53 g
2/15
AVERAGE MASS = 3.49 g
4. 





OBJECT SIZE
MASS OF ONE OBJECT
RELATIVE ABUNDANCE
Small Nail
3.28 g
19/50
Medium Nail
7.91 g
x
Large Nail
y
18/50
AVERAGE MASS = 7.84 g
5. 








G Redden

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