Gus, Ian and Abe had the same number of notes. Gus and Ian had a mix of $100-notes and $10-notes. Gus had 3 $100-notes while Ian had 13 $100-notes. Abe only had $100-notes.

1. Who had the least amount of money?
2. How much more did Ian have than Gus?
3. Ian used all his $10-notes to buy a wallet. He then had $3300 less than Abe. How many $100-notes did Abe have?

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

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

(b)
Number of more $100-notes that Ian had than Gus
= 13 - 3
= 10

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

Amount that Ian had more than Gus
= 10 x 90
= $900

(c)
Value of $100-notes that Ian had left
= 13 x 100
= $1300

Total value that Abe had
= 1300 + 3300
= $4600

Number of $100-notes that Abe had
= 4600 ÷ 100
= 46

Answer(s): (a) Gus; (b) $900; (c) 46