Charlie and Adam have 40 stickers.
Charlie has 3 times as many stickers as Adam.
- How many stickers does Adam have?
- How many stickers does Charlie have?
- How many stickers does Charlie have more than Adam?
- How many stickers does Adam have less than Charlie?
(a)
Focus on the sentence with the word 'times'.
Assign 1 u to the variable that is found after the word 'times'.
Number of stickers that Adam has = 1 u
Number of stickers that Charlie has = 3 u
Total number of stickers they have = 3 u + 1 u = 4
4 u = 40
1 u = 40 ÷ 4 = 10
Number of stickers that Adam has
= 1 u
= 10
(b)
Number of stickers that Charlie has
= 3 u
= 3 x 10
= 30
(c)
Number of stickers that Charlie has more than Adam
= 3 u - 1 u
= 2 u
= 2 x 10
= 20
(d)
Number of stickers that Adam has less than Charlie
= 3 u - 1 u
= 2 u
= 2 x 10
= 20
Answer(s): (a) 10; (b) 30; (c) 20; (d) 20