Kit, Roy and Jim had the same number of notes. Kit and Roy had a mix of $100-notes and $10-notes. Roy had 8 $100-notes while Kit had 15 $100-notes. Jim only had $100-notes.

1. Who had the least amount of money?
2. How much less did Roy have than Kit?
3. Kit used all his $10-notes to buy a wallet. He then had $1900 less than Jim. How many $100-notes did Jim have?

(a)
The three boys had the same number of notes.
$100-notes have a higher denomination than $10-notes.

Since Roy had the least number of $100-notes, he had the least money.

(b)
Number of less $100-notes that Roy had than Kit
= 15 - 8
= 7

Difference in the value of $100-note and $10-note
= 100 - 10
= $90

Amount that Roy had less than Kit
= 7 x 90
= $630

(c)
Value of $100-notes that Kit had left
= 15 x 100
= $1500

Total value that Jim had
= 1500 + 1900
= $3400

Number of $100-notes that Jim had
= 3400 ÷ 100
= 34

Answer(s): (a) Roy; (b) $630; (c) 34