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Question

Jiaqi , Gwen and Patricia painted the walls of a room together. Jiaqi painted 4/7 of the walls. Gwen and patricia painted an equal amount of the remaining area of the walls. Jiaqi painted 2/5 metre square more than the area that gwen and patricia eaxh painted. Find the total.area of the walls that they painted. Give your answer as a mixed number in its simplest form .

Answer

  J  :   G   :  P    :  Total

  4  :  1.5 :  1.5 :  7        (×2)

  8  :  3    :  3    :  14

  8u – 3u = 5u

  5u  = 2/5

  1u = 2/25

  14u = 2/25 m2 × 14

          = 28/25 m2

          = 1 3/25 m2 (ans)

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Jiaqi : Gwen + Patricia : Total
4 : 3 : 7
8 : 6 : 14

Jiaqi : Gwen : Patricia : Total
8 : 3 : 3 : 14

8 – 3 = 5
5 units = 2/5
14 units = 28/25 = 1 3/25

Ans : 1 3/25 sq m.

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