PSLE Flynn spent
49 of his money to buy 5 identical pens. He spent the rest of his money to buy another 6 such pens and 4 identical files.
- What fraction of Flynn's money was spent to buy the 4 files? Give your answer in the simplest form.
- For every 5 files bought, 1 additional file was given free. How many files would Flynn get in total if he were to spend all his money to buy files only?
(a)
Cost of 5 pens =
49 of his money
Cost of 1 pen
=
49 ÷ 5
=
49 x
15 =
445 of his money
Cost of 6 pens
= 6 x
445 =
2445 of his money
Fraction of Flynn's money spent to buy the 6 pens and 2 files
= 1 -
49 =
59 Fraction of Flynn's money spent to buy the 4 files
=
59 -
2445 =
2545 -
2445 =
145 (b)
145 of Flynn's money = 4 files
4545 of Flynn's money = 45 x 4 = 180 files
Number of free files
= 180 ÷ 5
= 30 r 0
Total number of files that Flynn would get
= 180 + 30
= 210
Answer(s): (a)
145; (b) 210