PSLE Elijah used
47 of his money to buy 12 notebooks. He used the rest of his money to buy 8 notebooks and 3 pencils.
- What fraction of his money did Elijah use to buy the 3 pencils?
- If 1 pencil was given for free for every 5 pencils bought, how many pencils would Elijah be able to buy if he were to use all his money to buy pencils?
(a)
Fraction of his money used to buy 8 notebooks and 3 pencils
= 1 -
47 =
37 12 notebooks →
47 of his money
1 pen →
47 ÷ 12 =
121 of his money
8 notebooks → 8 x
121 =
821 of his money
8 notebooks + 3 pencils →
37 of his money
3 pencils →
37 -
821 =
921 -
821 =
121 of his money
(b)
3 pencils →
1211 pencil →
121 ÷ 3 =
163 of his money
If 1 pencil cost
163 of his money, Elijah could buy 63 pencils (Not including the free ones).
Number of free pencils that Elijah could get
= 63 ÷ 5
= 12 r 3
Total number of pencils that Elijah could get
= 63 + 12
= 75
Answer(s): (a)
121; (b) 75