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pav-90 [236]
2 years ago
15

Steffi is painting her house. She has calculated she needs 40 litres of paint in total. She has decided to mix pink paint. She w

ill need 3 litres of white for every litres of red. How many litres of each colour will she need to buy?
Mathematics
1 answer:
EastWind [94]2 years ago
6 0

Answer:

Red=10 Pink=30

Step-by-step explanation:

you said for every litres of red; therefore, you need 3 litres of pink paint. So the steps are like this 3+1(P+R) ........... you need 30 litres pink and 10 litres red

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3 years ago
Julie and Eric row their boat (at a constant speed) downstream for 40 miles in 4 hours, helped by the current. Rowing at the sam
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Answer: 3 miles per hour

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Distribute, then eliminate r to solve for c:

Down: 4r + 4c = 40  →   5(4r + 4c = 40)  →   20r + 20c = 200

  Up: 10r - 10c = 40  → -2(10r - 10c = 40) → <u>-20r + 20c</u> =<u>  -80</u>

                                                                                40c = 120

                                                                              <u> ÷40  </u>  <u>÷40 </u>

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4 0
2 years ago
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Answer:

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5 0
2 years ago
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