31 P5.ST.JC.18121112
Level 2
Adam is 10 years old. The total age of Adam and Bryan is 50 years. How many years' time will the ratio of Adam's age to Bryan's age be 1 : 3?
2 m
Ratio to units Unchanged difference Units table
32 P5.ST.JC.18121113
Level 2
Adam has 30 blue stickers and 70 red stickers.
After giving away the same number of stickers,
the ratio of the blue stickers and the red stickers becomes 1 : 3.
How many stickers are given away?
2 m
Ratio to units Unchanged difference Units table
33 P5.ST.JC.18121114
Level 2
Adam has 30 blue stickers and 120 red stickers.
After buying the same number of stickers,
the ratio of the blue stickers and the red stickers becomes 1 : 3.
How many stickers does he buy?
2 m
Ratio to units Unchanged difference Units table
34 P5.ST.JC.18121115
Level 2
The ratio of the number of blue stickers to red stickers is 5 : 2.
After Adam gives away another 10 blue stickers and 10 red stickers,
the ratio of the number of blue stickers to red stickers is 3 : 1.
How many stickers does Adam have now?
3 m
Ratio to units Unchanged difference Units table
35 P5.ST.JC.18121116
Level 2
The ratio of the number of blue stickers to red stickers is 3 : 1.
After Adam buys another 10 blue stickers and 10 red stickers,
the ratio of the number of blue stickers to red stickers is 5 : 2.
How many stickers does Adam have now?
3 m
Ratio to units Unchanged difference Units table

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