PSLE Three boys, Ari, Ian and Don had the same number of notes. Ari and Ian each had of mix of $5-notes and $2-notes. Ari had 2 $2-notes while Ian had 19 $2-notes. Don had only $5-notes.
- Of the three boys, who had the most money?
- What was the difference in the total value of Ari and Ian's notes?
- Ian used all his $5-notes to buy a souvenir. He then had $97 less than Don. How many $5-notes did Don have?
(a)
The three boys had the same number of notes.
$2-notes have a lower denomination than $5-notes.
Since Don had only $5-notes, he had the most money.
(b)
Difference in the number of notes of different values
= 19 - 2
= 17
Difference in the value of $5-notes and $2-notes
= 5 - 2
= $3
Difference in the total value of Ari's and Ian's notes
= 17 x 3
= $51
(c)
Value of $2-notes that Ian had left
= 19 x 2
= $38
Total value that Don had
= 97 + 38
= $135
Number of $5-notes that Don had
= 135 ÷ 5
= 27
Answer(s): (a) Don; (b) $51; (c) 27