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charle [14.2K]
2 years ago
11

Richard works in a café for six hours a day and is paid $6 per hour for any extra time worked. If Richard worked 6.5 hours on Mo

nday, 6 and a half hours on Tuesday, 6 hours on Wednesday, 6 hours on Thursday, and 6 hours and 30 minutes on Friday, how much extra money will Richard earn that week?
Mathematics
1 answer:
valina [46]2 years ago
8 0
1.5 hr = 90 minutes
90 min = $9 extra dollars?
Not 100 percent sure - but hopefully this helps you
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Step-by-step explanation:

\displaystyle\\\left \{ {{4x-3y=6} \atop {6x-5y=6}} \right.\\

Since the right parts of the equation are equal, therefore the left parts of the equation are also equal:

4x-3y=6x-5y\\4x-3y+5y=6x-5y+5y\\4x+2y=6x\\4x+2y-4x=6x-4x\\2y=2x\\

Divide both parts of the equation by 2:

y=x\\Hence,\\4x-3x=6\\x=6\\Thus,\\x=y=6

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