PSLE Sean used
59 of his money to buy 10 staplers. He used the rest of his money to buy 7 staplers and 3 pens.
- What fraction of his money did Sean use to buy the 3 pens?
- If 1 pen was given for free for every 4 pens bought, how many pens would Sean be able to buy if he were to use all his money to buy pens?
(a)
Fraction of his money used to buy 7 staplers and 3 pens
= 1 -
59 =
49 10 staplers →
59 of his money
1 pen →
59 ÷ 10 =
118 of his money
7 staplers → 7 x
118 =
718 of his money
7 staplers + 3 pens →
49 of his money
3 pens →
49 -
718 =
818 -
718 =
118 of his money
(b)
3 pens →
1181 pen →
118 ÷ 3 =
154 of his money
If 1 pen cost
154 of his money, Sean could buy 54 pens (Not including the free ones).
Number of free pens that Sean could get
= 54 ÷ 4
= 13 r 2
Total number of pens that Sean could get
= 54 + 13
= 67
Answer(s): (a)
118; (b) 67