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one day a person went to a horse racing area. instaed of counting the number of humans and horse he counted 74 heads and 196 legs. how many humans and horse where there

 Nov 16, 2015
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Heads:                humans + horses = 74

Legs:                   2*humans + 4*horses = 196

 

Multiply the Heads equation by 2:   2*humans + 2*horses = 148

 

Subtract this from the Legs equation term by term:     2*horses = 48   Hence horses = 24

 

Put this back into the original Heads equation:    humans + 24 = 74     Hence humans = 50

 Nov 16, 2015

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