PSLE Three boys, Ned, Tom and Jed had the same number of notes. Ned and Tom each had of mix of $10-notes and $2-notes. Ned had 3 $2-notes while Tom had 17 $2-notes. Jed had only $10-notes.
- Of the three boys, who had the most money?
- What was the difference in the total value of Ned and Tom's notes?
- Tom used all his $10-notes to buy a souvenir. He then had $226 less than Jed. How many $10-notes did Jed have?
(a)
The three boys had the same number of notes.
$2-notes have a lower denomination than $10-notes.
Since Jed had only $10-notes, he had the most money.
(b)
Difference in the number of notes of different values
= 17 - 3
= 14
Difference in the value of $10-notes and $2-notes
= 10 - 2
= $8
Difference in the total value of Ned's and Tom's notes
= 14 x 8
= $112
(c)
Value of $2-notes that Tom had left
= 17 x 2
= $34
Total value that Jed had
= 226 + 34
= $260
Number of $10-notes that Jed had
= 260 ÷ 10
= 26
Answer(s): (a) Jed; (b) $112; (c) 26