Tim, Jon and Ken had the same number of notes. Tim and Jon had a mix of $20-notes and $10-notes. Tim had 8 $20-notes while Jon had 15 $20-notes. Ken only had $20-notes.
- Who had the least amount of money?
- How much more did Jon have than Tim?
- Jon used all his $10-notes to buy a wallet. He then had $300 less than Ken. How many $20-notes did Ken have?
(a)
The three boys had the same number of notes.
$20-notes have a higher denomination than $10-notes.
Since Tim had the least number of $20-notes, he had the least money.
(b)
Number of more $20-notes that Jon had than Tim
= 15 - 8
= 7
Difference in the value of $20-note and $10-note
= 20 - 10
= $10
Amount that Jon had more than Tim
= 7 x 10
= $70
(c)
Value of $20-notes that Jon had left
= 15 x 20
= $300
Total value that Ken had
= 300 + 300
= $600
Number of $20-notes that Ken had
= 600 ÷ 20
= 30
Answer(s): (a) Tim; (b) $70; (c) 30
