Ned, Ike and Don had the same number of notes. Ned and Ike had a mix of $100-notes and $10-notes. Ike had 6 $100-notes while Ned had 11 $100-notes. Don only had $100-notes.

1. Who had the least amount of money?
2. How much less did Ike have than Ned?
3. Ned used all his $10-notes to buy a wallet. He then had $3100 less than Don. How many $100-notes did Don have?

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

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

(b)
Number of less $100-notes that Ike had than Ned
= 11 - 6
= 5

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

Amount that Ike had less than Ned
= 5 x 90
= $450

(c)
Value of $100-notes that Ned had left
= 11 x 100
= $1100

Total value that Don had
= 1100 + 3100
= $4200

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

Answer(s): (a) Ike; (b) $450; (c) 42