How is question C solved?

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Answer 1 · 2018-06-19T05:48:35

The answer is $x = 2.83 h$ $x=2.83h$

Question $C$ $C$

The speed is $v = \frac{d}{t}$ $v=d/t$

$d = v t$ $d=vt$

First part, $d_{1} = 120 x$ $d_1=120x$

Second part,

$d_{2} = 60 (3 - x)$ $d_2=60(3-x)$

$350 = d_{1} + d_{2}$ $350=d_1+d_2$

$350 = (120 x) + 60 (3 - x)$ $350=(120x)+60(3-x)$

$350 = 120 x + 180 - 60 x$ $350=120x+180-60x$

$60 x = 350 - 180 = 170$ $60x=350-180=170$

$x = \frac{170}{60} = 2.83 h$ $x=170/60=2.83h$