PSLE Riordan used
59 of his money to buy 10 pens. He used the rest of his money to buy 7 pens and 4 staplers.
- What fraction of his money did Riordan use to buy the 4 staplers?
- If 1 stapler was given for free for every 5 staplers bought, how many staplers would Riordan be able to buy if he were to use all his money to buy staplers?
(a)
Fraction of his money used to buy 7 pens and 4 staplers
= 1 -
59 =
49 10 pens →
59 of his money
1 pen →
59 ÷ 10 =
118 of his money
7 pens → 7 x
118 =
718 of his money
7 pens + 4 staplers →
49 of his money
4 staplers →
49 -
718 =
818 -
718 =
118 of his money
(b)
4 staplers →
1181 stapler →
118 ÷ 4 =
172 of his money
If 1 stapler cost
172 of his money, Riordan could buy 72 staplers (Not including the free ones).
Number of free staplers that Riordan could get
= 72 ÷ 5
= 14 r 2
Total number of staplers that Riordan could get
= 72 + 14
= 86
Answer(s): (a)
118; (b) 86