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Question 14a

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The pie chart below shows the different coloured beads Rahim has. 1/5 of the beads Rahim has are red. The number of yellow beads is 4 times as many as the number of blue beads. What percentage of the beads are blue? (3 marks)

Question 14a diagram

Answer: 11 %

Workings

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red → 1/5 green → 1/4

blue + yellow → 1 - 1/5 - 1/4 = 20/20 - 4/20 - 5/20 = 11/20

blue + yellow (%) = 11/20 x 100% = 55%

"The number of yellow beads is 4 times as many as the number of blue beads."

yellow → 4u blue → 1u blue + yellow → 4u + 1u = 5u

5u → 55% 1u (blue) → 55 ÷ 5 = 11%

Video explanations

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