PSLE Vincent spent
25 of his money to buy 3 identical pens. He spent the rest of his money to buy another 4 such pens and 3 identical staplers.
- What fraction of Vincent's money was spent to buy the 3 staplers? Give your answer in the simplest form.
- For every 6 staplers bought, 1 additional stapler was given free. How many staplers would Vincent get in total if he were to spend all his money to buy staplers only?
(a)
Cost of 3 pens =
25 of his money
Cost of 1 pen
=
25 ÷ 3
=
25 x
13 =
215 of his money
Fraction of Vincent's money spent to buy the 4 pens and 2 staplers
= 1 -
25 =
35 Cost of 4 pens
= 4 x
215 =
815 of his money
Fraction of Vincent's money spent to buy the 3 staplers
=
35 -
815 =
915 -
815 =
115 (b)
115 of Vincent's money = 3 staplers
1515 of Vincent's money = 15 x 3 = 45 staplers
Number of free staplers
= 45 ÷ 6
= 11 r 1
Total number of staplers that Vincent would get
= 45 + 11
= 56
Answer(s): (a)
115; (b) 56