SOLUTION: Maria bought seven boxes. A week later half of all the boxes were destroyed in a fire. There are now only 22 boxes left. with how many did she start with.
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Question 276630: Maria bought seven boxes. A week later half of all the boxes were destroyed in a fire. There are now only 22 boxes left. with how many did she start with. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Maria bought seven boxes.
A week later half of all the boxes were destroyed in a fire.
There are now only 22 boxes left.
How many did she start with?
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Assume she had x boxes to start with.
After buying 7 she had x+7 boxes
She lost (1/2)(x+7) in the fire.
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Equation:
x - (1/2)(x+7) = 22
x - (1/2)x - (7/2) = 22
(1/2)x - (7/2) = 22
(1/2)x = 51/2
x = 51 boxes
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