2024 BTYSS P2 Q7

2024 BTYSS P2 Q7

Secondary 4
6 marks
  1. Solve the simultaneous equations
    \[\begin{aligned}2x-3y&=8\\4x+5y&=-6\end{aligned}\][3]
  2. There were a total of \(51\) red and blue balls in a box.
    The ratio of red balls to blue balls was \(6:11\).
    When some red balls were added into the box, the ratio of red balls to blue balls became \(4:3\).
    How many red balls were added into the box?[3]

Solution:

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Answer:(a) \(x=1,\ y=-2\) (b) \(26\)

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