Tom, Luc and Sam had the same number of notes. Tom and Luc had a mix of $100-notes and $20-notes. Luc had 7 $100-notes while Tom had 14 $100-notes. Sam only had $100-notes.

1. Who had the least amount of money?
2. How much less did Luc have than Tom?
3. Tom used all his $20-notes to buy a wallet. He then had $3000 less than Sam. How many $100-notes did Sam have?

(a)
The three boys had the same number of notes.
$100-notes have a higher denomination than $20-notes.

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

(b)
Number of less $100-notes that Luc had than Tom
= 14 - 7
= 7

Difference in the value of $100-note and $20-note
= 100 - 20
= $80

Amount that Luc had less than Tom
= 7 x 80
= $560

(c)
Value of $100-notes that Tom had left
= 14 x 100
= $1400

Total value that Sam had
= 1400 + 3000
= $4400

Number of $100-notes that Sam had
= 4400 ÷ 100
= 44

Answer(s): (a) Luc; (b) $560; (c) 44