PSLE
Three boys, Kit, Dan and Jim had the same number of notes. Kit and Dan each had of mix of $10-notes and $5-notes. Kit had 15 $5-notes while Dan had 22 $5-notes. Jim had only $10-notes.

1. Of the three boys, who had the most money? 
2. What was the difference in the total value of Kit and Dan's notes? 
3. Dan used all his $10-notes to buy a present. He then had $190 less than Jim. How many $10-notes did Jim have?

(a)
The three boys had the same number of notes.
$5-notes have a lower denomination than $10-notes.

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

(b)
Difference in the number of notes of different values
= 22 - 15
= 7

Difference in the value of $10-notes and $5-notes
= 10 - 5
= $5

Difference in the total value of Kit's and Dan's notes
= 7 x 5
= $35

(c)
Value of $5-notes that Dan had left
= 22 x 5
= $110

Total value that Jim had
= 190 + 110
= $300

Number of $10-notes that Jim had
= 300 ÷ 10
= 30

Answer(s): (a) Jim; (b) $35; (c) 30