PSLE Luis used
47 of his money to buy 8 staplers. He used the rest of his money to buy 5 staplers and 2 pens.
- What fraction of his money did Luis use to buy the 2 pens?
- If 1 pen was given for free for every 5 pens bought, how many pens would Luis be able to buy if he were to use all his money to buy pens?
(a)
Fraction of his money used to buy 5 staplers and 2 pens
= 1 -
47 =
37 8 staplers →
47 of his money
1 pen →
47 ÷ 8 =
114 of his money
5 staplers → 5 x
114 =
514 of his money
5 staplers + 2 pens →
37 of his money
2 pens →
37 -
514 =
614 -
514 =
114 of his money
(b)
2 pens →
1141 pen →
114 ÷ 2 =
128 of his money
If 1 pen cost
128 of his money, Luis could buy 28 pens (Not including the free ones).
Number of free pens that Luis could get
= 28 ÷ 5
= 5 r 3
Total number of pens that Luis could get
= 28 + 5
= 33
Answer(s): (a)
114; (b) 33