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Leto [7]
3 years ago
9

Two mechanics worked on a car. The first mechanic charged $75 per hour, and the second mechanic charged $45 per hour. The mechan

ics worked for a
combined total of 25 hours, and together they charged a total of $1425. How long did each mechanic work?
Mathematics
2 answers:
Nat2105 [25]3 years ago
6 0

Answer:

First mechanic 10 hours, Second is 15 hours

Step-by-step explanation:

x + y = 25, so y = 25 - x

75x + 45y = 1425

Substitute in the first equation

75x + 45(25 - x) = 1425

75x + 1125 - 45x = 1425

30x = 300

x = 10

Therefore, y = 15

pogonyaev3 years ago
4 0

Answer:

they both worked

8 hours

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Total area
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4 years ago
Un cuadrado tiene de lado 5 cm, si se construye otro cuadrado semejante con una razón de semejanza de 0.6. ¿cuánto mide el lado
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3 years ago
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xxTIMURxx [149]

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Step-by-step explanation:

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