Puzzle 18 : Liar Liar

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 Solution to puzzle 17:

  • Renaldo has received 3025 as his total money for the month out of which 2500 is salary.
  • Which means he received 525 as commission for his sales.
  • 525 = 10.5% of x
  • x = 525 * 100 /10.5 = 5000 $
  • His sales for the month was $5000.

 

Puzzle 18 : Liar Liar

Christanio Ronaldo is a strange liar.

He lies on six days of the week, but on the seventh day he always tells the truth.

He made the following statements on three successive days:

Day 1: 'I lie on Monday and Tuesday.'
Day 2: 'Today, it's Thursday, Saturday, or Sunday.'
Day 3: 'I lie on Wednesday and Friday.'

On which day does Christanio Ronaldo tell the truth? 

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