Answer:
10
Step-by-step explanation:
(15 x 40) / (15+40)
solve inside the parenthesis:
600/60
divide:
10
Answer:
$37.5
Step-by-step explanation:
$7.50=in one hr
$? =in five hr
since you can cross each other
<h2>therefore the resalt it will give $37.50 right</h2>
Write the equations:

Substitute for h:

Solve for s:

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6x^2 is the correct answer to the problem.