PSLE
Three men, Tim, Ken and Rey had the same number of notes. Ken and Tim each had of mix of $100-notes and $50-notes. Ken had 3 $50-notes while Tim had 15 $50-notes. Rey had only $100-notes.

1. Of the three men, who had the least money? 
2. What was the difference in the total value of Ken and Tim's notes? 
3. Tim used all his $100-notes to buy a present. Rey then had $1350 more than Tim. How many $100-notes did Rey have?

(a)
The three men had the same number of notes.
$50-notes have a lower denomination than $100-notes.

Tim had more $50-notes than Ken while Rey had only the $100-notes.  

Since Tim had the most number of $50-notes, he had the least money.

(b)
Difference in the number of notes of different values
= 15 - 3
= 12

Difference in the value of $100-note and $50-note
= 100 - 50
= $50

Difference in the total value of Ken's and Tim's notes
= 12 x 50
= $600

(c)
Value of $50-notes that Tim had left
= 15 x 50
= $750

Total value that Rey had
= 1350 + 750
= $2100

Number of $100-notes that Rey had
= 2100 ÷ 100
= 21

Answer(s): (a) Tim; (b) $600; (c) 21