PSLE Zeph used
47 of his money to buy 12 pens. He used the rest of his money to buy 8 pens and 2 files.
- What fraction of his money did Zeph use to buy the 2 files?
- If 1 file was given for free for every 5 files bought, how many files would Zeph be able to buy if he were to use all his money to buy files?
(a)
Fraction of his money used to buy 8 pens and 2 files
= 1 -
47 =
37 12 pens →
47 of his money
1 pen →
47 ÷ 12 =
121 of his money
8 pens → 8 x
121 =
821 of his money
8 pens + 2 files →
37 of his money
2 files →
37 -
821 =
921 -
821 =
121 of his money
(b)
2 files →
1211 file →
121 ÷ 2 =
142 of his money
If 1 file cost
142 of his money, Zeph could buy 42 files (Not including the free ones).
Number of free files that Zeph could get
= 42 ÷ 5
= 8 r 2
Total number of files that Zeph could get
= 42 + 8
= 50
Answer(s): (a)
121; (b) 50