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P=4k-10 p=50 wout out the value of k
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P=4k-10 p=50 wout out the value of k

User Fredrik Leijon
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p = 4k - 10

subtitute p = 50 to the equation:

50 = 4k - 10
4k - 10 = 50 |add 10 to the both sides
4k = 60 |divide both sides by 4

k = 15
User ScottJ
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