PSLE Zeph used
47 of his money to buy 12 staplers. He used the rest of his money to buy 8 staplers and 2 pencils.
- What fraction of his money did Zeph use to buy the 2 pencils?
- If 1 pencil was given for free for every 4 pencils bought, how many pencils would Zeph be able to buy if he were to use all his money to buy pencils?
(a)
Fraction of his money used to buy 8 staplers and 2 pencils
= 1 -
47 =
37 12 staplers →
47 of his money
1 pen →
47 ÷ 12 =
121 of his money
8 staplers → 8 x
121 =
821 of his money
8 staplers + 2 pencils →
37 of his money
2 pencils →
37 -
821 =
921 -
821 =
121 of his money
(b)
2 pencils →
1211 pencil →
121 ÷ 2 =
142 of his money
If 1 pencil cost
142 of his money, Zeph could buy 42 pencils (Not including the free ones).
Number of free pencils that Zeph could get
= 42 ÷ 4
= 10 r 2
Total number of pencils that Zeph could get
= 42 + 10
= 52
Answer(s): (a)
121; (b) 52