PSLE Three boys, Kai, Dan and Ike had the same number of notes. Kai and Dan each had of mix of $5-notes and $2-notes. Kai had 2 $2-notes while Dan had 13 $2-notes. Ike had only $5-notes.
- Of the three boys, who had the most money?
- What was the difference in the total value of Kai and Dan's notes?
- Dan used all his $5-notes to buy a souvenir. He then had $74 less than Ike. How many $5-notes did Ike have?
(a)
The three boys had the same number of notes.
$2-notes have a lower denomination than $5-notes.
Since Ike had only $5-notes, he had the most money.
(b)
Difference in the number of notes of different values
= 13 - 2
= 11
Difference in the value of $5-notes and $2-notes
= 5 - 2
= $3
Difference in the total value of Kai's and Dan's notes
= 11 x 3
= $33
(c)
Value of $2-notes that Dan had left
= 13 x 2
= $26
Total value that Ike had
= 74 + 26
= $100
Number of $5-notes that Ike had
= 100 ÷ 5
= 20
Answer(s): (a) Ike; (b) $33; (c) 20