Question
PSLE
Ivan had red staplers and black staplers for sale. He sold 560 red staplers. 30% of the staplers sold were black.
  1. How many red staplers and black staplers did Ivan sell altogether?
  2. He sold 50% of his staplers. 70% of the staplers left unsold were red. How many black staplers did Ivan have at first?
4 m
(a)

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(b)

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PSLE
Ivan had red staplers and black staplers for sale. He sold 560 red staplers. 30% of the staplers sold were black.
  1. How many red staplers and black staplers did Ivan sell altogether?
  2. He sold 50% of his staplers. 70% of the staplers left unsold were red. How many black staplers did Ivan have at first?