Kai, Tom and Ty had the same number of notes. Kai and Tom had a mix of $100-notes and $20-notes. Kai had 3 $100-notes while Tom had 10 $100-notes. Ty only had $100-notes.

1. Who had the least amount of money?
2. How much more did Tom have than Kai?
3. Tom used all his $20-notes to buy a wallet. He then had $3200 less than Ty. How many $100-notes did Ty have?

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

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

(b)
Number of more $100-notes that Tom had than Kai
= 10 - 3
= 7

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

Amount that Tom had more than Kai
= 7 x 80
= $560

(c)
Value of $100-notes that Tom had left
= 10 x 100
= $1000

Total value that Ty had
= 1000 + 3200
= $4200

Number of $100-notes that Ty had
= 4200 ÷ 100
= 42

Answer(s): (a) Kai; (b) $560; (c) 42