Riordan had
19 as many stickers as Owen. Owen had thrice as many stickers as Ken. If Riordan had 60 stickers fewer than Ken,
- how many stickers did Riordan have?
- how many stickers did they have altogether?
(a)
Number of stickers that Riordan had = 1 u
Number of stickers that Owen had = 9 u
Number of stickers that Ken had = 9 u ÷ 3 = 3 u
Number of stickers that Riordan had fewer than Ken
= 3 u - 1 u
= 2 u
2 u = 60
1 u = 60 ÷ 2 = 30
Number of stickers that Riordan had
= 1 u
= 30
(b)
Total number of stickers that they had
= 1 u + 9 u + 3 u
= 13 u
= 13 x 30
= 390
Answer(s): (a) 30; (b) 390
