Jed, Ty and Ari had the same number of notes. Jed and Ty had a mix of $100-notes and $20-notes. Jed had 10 $100-notes while Ty had 16 $100-notes. Ari only had $100-notes.

1. Who had the least amount of money?
2. How much more did Ty have than Jed?
3. Ty used all his $20-notes to buy a wallet. He then had $2400 less than Ari. How many $100-notes did Ari have?

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

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

(b)
Number of more $100-notes that Ty had than Jed
= 16 - 10
= 6

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

Amount that Ty had more than Jed
= 6 x 80
= $480

(c)
Value of $100-notes that Ty had left
= 16 x 100
= $1600

Total value that Ari had
= 1600 + 2400
= $4000

Number of $100-notes that Ari had
= 4000 ÷ 100
= 40

Answer(s): (a) Jed; (b) $480; (c) 40