Adam has blue and green stickers in the ratio of 5 : 3.
He has 60 more blue stickers than green stickers.
- How many stickers does Adam have?
- If Adam gives away 40 blue stickers, what is the new ratio of the number of blue stickers to green stickers?
(a)
Number of blue stickers = 5 u
Number of green stickers = 3 u
Number of more blue stickers than green stickers
= 5 u - 3 u
= 2 u
2 u = 60
1 u = 60 ÷ 2 = 30
Number of stickers that Adam has
= 5 u + 3 u
= 8 u
= 8 x 30
= 240
(b)
Number of blue stickers after Adam gives away 40
= 5 u - 40
= 5 x 30 - 40
= 150 - 40
= 110
Number of green stickers
= 3 u
= 3 x 40
= 90
New ratio of the number of blue stickers to green stickers
110 : 90
(÷ 10) 11 : 9
Answer(s): (a) 240; (b) 11 : 9