SOLUTION: Mary bought a roll of tape 450cm long she cut it into an equal number of 4cm and 5cm strips how many 4cm strips did she get?
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Question 959075: Mary bought a roll of tape 450cm long she cut it into an equal number of 4cm and 5cm strips how many 4cm strips did she get? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Mary bought a roll of tape 450cm long she cut it into an equal number of 4cm and 5cm strips how many 4cm strips did she get?
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Equation:
Quantity:: f - v = 0
Length::4f + 5v = 450 cm
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Modify for elimination:
4f - 4v = 0
4f + 5v = 450
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Subtract and solve for "v"::
9v = 450
v = 50 (# of five cm strips)
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Solve for "f":
f = v
v = 50 (# of four cm strips)
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Cheers,
Stan H.
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