PSLE
Three boys, Rey, Hal and Jon had the same number of notes. Rey and Hal each had of mix of $10-notes and $2-notes. Rey had 14 $2-notes while Hal had 23 $2-notes. Jon had only $10-notes.

1. Of the three boys, who had the most money? 
2. What was the difference in the total value of Rey and Hal's notes? 
3. Hal used all his $10-notes to buy a present. He then had $234 less than Jon. How many $10-notes did Jon have?

(a)
The three boys had the same number of notes.
$2-notes have a lower denomination than $10-notes.

Since Jon had only $10-notes, he had the most money.

(b)
Difference in the number of notes of different values
= 23 - 14
= 9

Difference in the value of $10-notes and $2-notes
= 10 - 2
= $8

Difference in the total value of Rey's and Hal's notes
= 9 x 8
= $72

(c)
Value of $2-notes that Hal had left
= 23 x 2
= $46

Total value that Jon had
= 234 + 46
= $280

Number of $10-notes that Jon had
= 280 ÷ 10
= 28

Answer(s): (a) Jon; (b) $72; (c) 28