PSLE
Three men, Kit, Tom and Jed had the same number of notes. Tom and Kit each had of mix of $20-notes and $10-notes. Tom had 5 $10-notes while Kit had 13 $10-notes. Jed had only $20-notes.

1. Of the three men, who had the least money? 
2. What was the difference in the total value of Tom and Kit's notes? 
3. Kit used all his $20-notes to buy a present. Jed then had $310 more than Kit. How many $20-notes did Jed have?

(a)
The three men had the same number of notes.
$10-notes have a lower denomination than $20-notes.

Kit had more $10-notes than Tom while Jed had only the $20-notes.  

Since Kit had the most number of $10-notes, he had the least money.

(b)
Difference in the number of notes of different values
= 13 - 5
= 8

Difference in the value of $20-note and $10-note
= 20 - 10
= $10

Difference in the total value of Tom's and Kit's notes
= 8 x 10
= $80

(c)
Value of $10-notes that Kit had left
= 13 x 10
= $130

Total value that Jed had
= 310 + 130
= $440

Number of $20-notes that Jed had
= 440 ÷ 20
= 22

Answer(s): (a) Kit; (b) $80; (c) 22