Asked by nisrin
On one side of a balance scale is a whole brick. On the other side is one-half of a brick and 4 pounds of potatoes. If the scale balances. how many pounds does a whole brick weigh?
Answers
Answered by
Reiny
b = b/2 + 4
multiply each side by 2
2b = b +8
b = 8
one brick weighs 8 lbs
multiply each side by 2
2b = b +8
b = 8
one brick weighs 8 lbs
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