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Dafna1 [17]
3 years ago
5

Julio is paid 1.4 times his normal hourly rate for each hour he works over 30 hours in a week. Last week he worked 35 hours and

earned $436.60. Write and solve an equation to find Julio's normal hourly rate, r. Explain how you know that your answer is reasonable.
Mathematics
2 answers:
irina1246 [14]3 years ago
8 0

Answer:

Normal earning rate of Julio is $11.78

Step-by-step explanation:

Let the normal hourly rate of earning = $r per hour

Then for overtime earnings = 1.4 × $r per hour

Julio works for 30 hours so earnings = 30(r)

last he did overtime for 5 hours (35 - 30) so the earning for the overtime = 5(1.4r) = 7r

Total earning of Julio = 30r + 7r = $436

or 37r = $436

r = \frac{436}{37} = $11.78

Therefore, normal rate of Julio's earning is $11.78.

patriot [66]3 years ago
6 0
N = regular rate
1.4n= overtime rate

30n + 5(1.4n) = $436.60  (30 hours x regular rate n)  plus 5 hours at 1.4 times reg rate.

30n + 7n = $436.60    now add like terms
37n = $436.60    now divide both sides by 37
n= $11.80   
Check to see if my answer is reasonable 30 x 12= 360  + 5 x 10 x 1.4 = about 70 (notice that I used 10 instead of 12 here so I could do it in my head)
360 + 70 = 430 - close enough - my answer is reasonable
Check:
(30 x $11.80) + 5 ( 1.4 x 11.80
354 + 5( 16.52)
354 + 82.60 = 436.60    ($436.60)
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