PSLE Glen spent
25 of his money to buy 3 identical markers. He spent the rest of his money to buy another 4 such markers and 2 identical files.
- What fraction of Glen's money was spent to buy the 2 files? Give your answer in the simplest form.
- For every 3 files bought, 1 additional file was given free. How many files would Glen get in total if he were to spend all his money to buy files only?
(a)
Cost of 3 markers =
25 of his money
Cost of 1 marker
=
25 ÷ 3
=
25 x
13 =
215 of his money
Cost of 4 markers
= 4 x
215 =
815 of his money
Fraction of Glen's money spent to buy the 4 markers and 2 files
= 1 -
25 =
35 Fraction of Glen's money spent to buy the 2 files
=
35 -
815 =
915 -
815 =
115 (b)
115 of Glen's money = 2 files
1515 of Glen's money = 15 x 2 = 30 files
Number of free files
= 30 ÷ 3
= 7 r 2
Total number of files that Glen would get
= 30 + 7
= 37
Answer(s): (a)
115; (b) 37