PSLE Fred spent
13 of his money to buy 3 identical files. He spent the rest of his money to buy another 5 such files and 3 identical markers.
- What fraction of Fred's money was spent to buy the 3 markers? Give your answer in the simplest form.
- For every 6 markers bought, 1 additional marker was given free. How many markers would Fred get in total if he were to spend all his money to buy markers only?
(a)
Cost of 3 files =
13 of his money
Cost of 1 file
=
13 ÷ 3
=
13 x
13 =
19 of his money
Fraction of Fred's money spent to buy the 5 files and 2 markers
= 1 -
13 =
23 Cost of 5 files
= 5 x
19 =
59 of his money
Fraction of Fred's money spent to buy the 3 markers
=
23 -
59 =
69 -
59 =
19 (b)
19 of Fred's money = 3 markers
99 of Fred's money = 9 x 3 = 27 markers
Number of free markers
= 27 ÷ 6
= 5 r 2
Total number of markers that Fred would get
= 27 + 5
= 32
Answer(s): (a)
19; (b) 32