PSLE Ethan used
59 of his money to buy 10 pens. He used the rest of his money to buy 7 pens and 5 pencils.
- What fraction of his money did Ethan use to buy the 5 pencils?
- If 1 pencil was given for free for every 4 pencils bought, how many pencils would Ethan be able to buy if he were to use all his money to buy pencils?
(a)
Fraction of his money used to buy 7 pens and 5 pencils
= 1 -
59 =
49 10 pens →
59 of his money
1 pen →
59 ÷ 10 =
118 of his money
7 pens → 7 x
118 =
718 of his money
7 pens + 5 pencils →
49 of his money
5 pencils →
49 -
718 =
818 -
718 =
118 of his money
(b)
5 pencils →
1181 pencil →
118 ÷ 5 =
190 of his money
If 1 pencil cost
190 of his money, Ethan could buy 90 pencils (Not including the free ones).
Number of free pencils that Ethan could get
= 90 ÷ 4
= 22 r 2
Total number of pencils that Ethan could get
= 90 + 22
= 112
Answer(s): (a)
118; (b) 112