PSLE Carl spent
37 of his money to buy 4 identical staplers. He spent the rest of his money to buy another 5 such staplers and 2 identical notebooks.
- What fraction of Carl's money was spent to buy the 2 notebooks? Give your answer in the simplest form.
- For every 4 notebooks bought, 1 additional notebook was given free. How many notebooks would Carl get in total if he were to spend all his money to buy notebooks only?
(a)
Cost of 4 staplers =
37 of his money
Cost of 1 stapler
=
37 ÷ 4
=
37 x
14 =
328 of his money
Cost of 5 staplers
= 5 x
328 =
1528 of his money
Fraction of Carl's money spent to buy the 5 staplers and 2 notebooks
= 1 -
37 =
47 Fraction of Carl's money spent to buy the 2 notebooks
=
47 -
1528 =
1628 -
1528 =
128 (b)
128 of Carl's money = 2 notebooks
2828 of Carl's money = 28 x 2 = 56 notebooks
Number of free notebooks
= 56 ÷ 4
= 11 r 1
Total number of notebooks that Carl would get
= 56 + 11
= 67
Answer(s): (a)
128; (b) 67