KARLA has spent $33 on food. She bought milk, cheese, and meat. The milk cost half as much as the cheese and the meat cost four
times as much as the cheese. Which equation will help you find the cost of the cheese?
1 answer:
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The two trains meet if and only if , and we know that this happens after two hours, i.e. at
Solving this equation for v we have
So, train A is travelling at 105 km/h. This implies that train B travels at
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The solution of x is equal to 28, therefore 12 is not a solution of the equation