Question #88787

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Question #88787

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Answer 1 · 2017-11-21T12:31:39

Apple = 0.4$
Orange = 0.6$

Explanation:

Let $a =$ $a=$ apple and let $b =$ $b=$ orange
$\Rightarrow$ $=>$
$3 a + 4 b = 3.6$ $3a+4b=3.6$
$2 a + 5 b = 3.8$ $2a+5b=3.8$
$\Rightarrow$ $=>$
$6 a + 8 b = 7.2$ $6a+8b=7.2$
$6 a + 15 b = 11.4$ $6a+15b=11.4$
$\Rightarrow$ $=>$
$6 a = - 8 b + 7.2$ $6a=-8b+7.2$
$6 a = - 15 b + 11.4$ $6a=-15b+11.4$
$\Rightarrow$ $=>$
$- 8 b + 7.2 = - 15 b + 11.4$ $-8b+7.2=-15b+11.4$
$\Rightarrow 7 b = 4.2$ $=> 7b=4.2$
$\Rightarrow b = 0.6$ $=> b=0.6$
$\Rightarrow$ $=>$
$6 a = - 8 \cdot (0.6) + 7.2 \Rightarrow 6 a = 2.4 \Rightarrow a = 0.4$ $6a=-8*(0.6)+7.2 => 6a=2.4 => a=0.4$
$6 a = - 15 \cdot (0.6) + 11.4 \Rightarrow 6 a = 2.4 \Rightarrow a = 0.4$ $6a=-15*(0.6)+11.4 => 6a=2.4 => a=0.4$

If we got the same "a", we were right! :-)

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Question #88787

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