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Artyom0805 [142]
3 years ago
13

33/5 divided by 21/4 keep change flip

Mathematics
2 answers:
JulijaS [17]3 years ago
6 0

Answer:

33/5 x 4/21 = 44/35

Step-by-step explanation:


Amanda [17]3 years ago
4 0

Answer: 33/5 x 4/21 = 44/35




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Felix and Oscar own a pastry shop. Working alone Felix can decorate 8 dozen cookies in 90 minutes. Oscar, on
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<em>Working together</em>, decorating 16 dozens of cookies will take 103 minutes.

<u>Let's calculate theor individual work rate</u> :

  • Rate = 1/ time

Felix's rate = 1/90

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Combined rate = 1/90 + 1/120 = (4 + 3) / 360 = 7/360

<u>Time taken for both of the to decorate 8 dozens</u> :

Reciprocal of their combined rate = 1 ÷ (7/360) = 51.428571 minutes

<u>Hence, the time taken to decorate 16 dozens will be</u> :

(16/8) × 51.428571 = 102.857 = 103 minutes (nearest while number).

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