PSLE Wesley spent
25 of his money to buy 3 identical files. He spent the rest of his money to buy another 4 such files and 2 identical pencils.
- What fraction of Wesley's money was spent to buy the 2 pencils? Give your answer in the simplest form.
- For every 6 pencils bought, 1 additional pencil was given free. How many pencils would Wesley get in total if he were to spend all his money to buy pencils only?
(a)
Cost of 3 files =
25 of his money
Cost of 1 file
=
25 ÷ 3
=
25 x
13 =
215 of his money
Fraction of Wesley's money spent to buy the 4 files and 2 pencils
= 1 -
25 =
35 Cost of 4 files
= 4 x
215 =
815 of his money
Fraction of Wesley's money spent to buy the 2 pencils
=
35 -
815 =
915 -
815 =
115 (b)
115 of Wesley's money = 2 pencils
1515 of Wesley's money = 15 x 2 = 30 pencils
Number of free pencils
= 30 ÷ 6
= 7 r 2
Total number of pencils that Wesley would get
= 30 + 7
= 37
Answer(s): (a)
115; (b) 37