PSLE Ahmad used
23 of his money to buy 6 files. He used the rest of his money to buy 2 files and 3 pens.
- What fraction of his money did Ahmad use to buy the 3 pens?
- If 1 pen was given for free for every 4 pens bought, how many pens would Ahmad be able to buy if he were to use all his money to buy pens?
(a)
Fraction of his money used to buy 2 files and 3 pens
= 1 -
23 =
13 6 files →
23 of his money
1 pen →
23 ÷ 6 =
19 of his money
2 files → 2 x
19 =
29 of his money
2 files + 3 pens →
13 of his money
3 pens →
13 -
29 =
39 -
29 =
19 of his money
(b)
3 pens →
191 pen →
19 ÷ 3 =
127 of his money
If 1 pen cost
127 of his money, Ahmad could buy 27 pens (Not including the free ones).
Number of free pens that Ahmad could get
= 27 ÷ 4
= 6 r 3
Total number of pens that Ahmad could get
= 27 + 6
= 33
Answer(s): (a)
19; (b) 33