PSLE Perry spent
49 of his money to buy 5 identical files. He spent the rest of his money to buy another 6 such files and 2 identical pens.
- What fraction of Perry's money was spent to buy the 2 pens? Give your answer in the simplest form.
- For every 6 pens bought, 1 additional pen was given free. How many pens would Perry get in total if he were to spend all his money to buy pens only?
(a)
Cost of 5 files =
49 of his money
Cost of 1 file
=
49 ÷ 5
=
49 x
15 =
445 of his money
Cost of 6 files
= 6 x
445 =
2445 of his money
Fraction of Perry's money spent to buy the 6 files and 2 pens
= 1 -
49 =
59 Fraction of Perry's money spent to buy the 2 pens
=
59 -
2445 =
2545 -
2445 =
145 (b)
145 of Perry's money = 2 pens
4545 of Perry's money = 45 x 2 = 90 pens
Number of free pens
= 90 ÷ 6
= 15 r 0
Total number of pens that Perry would get
= 90 + 15
= 105
Answer(s): (a)
145; (b) 105