P=4H
P+R+H=100
2P+4R+4H=272
Substitute:
R+5H=100
4R+12H=272
Divide 2nd equation by 4: R + 3H = 68
Subtract this equation from the other to get: 2H=32 and H=16 => P = 64
R+80=100 so that R=10
Paul M.
tutor
Of course! This is an error between my notes and my typing. Thanks for catching this error.
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07/31/19
Amber K.
R should equal 2007/31/19