PSLE Xavier spent
49 of his money to buy 5 identical notebooks. He spent the rest of his money to buy another 6 such notebooks and 4 identical pens.
- What fraction of Xavier's money was spent to buy the 4 pens? Give your answer in the simplest form.
- For every 4 pens bought, 1 additional pen was given free. How many pens would Xavier get in total if he were to spend all his money to buy pens only?
(a)
Cost of 5 notebooks =
49 of his money
Cost of 1 notebook
=
49 ÷ 5
=
49 x
15 =
445 of his money
Fraction of Xavier's money spent to buy the 6 notebooks and 2 pens
= 1 -
49 =
59 Cost of 6 notebooks
= 6 x
445 =
2445 of his money
Fraction of Xavier's money spent to buy the 4 pens
=
59 -
2445 =
2545 -
2445 =
145 (b)
145 of Xavier's money = 4 pens
4545 of Xavier's money = 45 x 4 = 180 pens
Number of free pens
= 180 ÷ 4
= 30 r 0
Total number of pens that Xavier would get
= 180 + 30
= 210
Answer(s): (a)
145; (b) 210