PSLE Albert spent
13 of his money to buy 3 identical notebooks. He spent the rest of his money to buy another 5 such notebooks and 3 identical staplers.
- What fraction of Albert's money was spent to buy the 3 staplers? Give your answer in the simplest form.
- For every 4 staplers bought, 1 additional stapler was given free. How many staplers would Albert get in total if he were to spend all his money to buy staplers only?
(a)
Cost of 3 notebooks =
13 of his money
Cost of 1 notebook
=
13 ÷ 3
=
13 x
13 =
19 of his money
Cost of 5 notebooks
= 5 x
19 =
59 of his money
Fraction of Albert's money spent to buy the 5 notebooks and 2 staplers
= 1 -
13 =
23 Fraction of Albert's money spent to buy the 3 staplers
=
23 -
59 =
69 -
59 =
19 (b)
19 of Albert's money = 3 staplers
99 of Albert's money = 9 x 3 = 27 staplers
Number of free staplers
= 27 ÷ 4
= 5 r 2
Total number of staplers that Albert would get
= 27 + 5
= 32
Answer(s): (a)
19; (b) 32