41 P5.ST.JC.18121106
Level 2
Adam and Bryan have some stickers in the ratio of 3 : 2.
When Adam gives away 40 stickers,
the ratio of the stickers becomes 1 : 3.
  1. How many stickers do they have at first?
  2. How many stickers do they have in the end?
3 m
Ratio to units Unchanged quantity Units table
42 P5.ST.JC.18121107
Level 2
Adam and Bryan have some stickers in the ratio of 1 : 3.
When Adam buys another 40 stickers,
the ratio of the stickers becomes 3 : 2.
  1. How many stickers do they have at first?
  2. How many stickers do they have in the end?
3 m
Ratio to units Unchanged quantity Units table
43 P6.PC.TL.16010103
Level 3
Some adult passengers are on a coach. If 25 tourists alight from the coach, the percentage of locals will increase from 15% to 40%. How many passengers are there in the coach?
3 m
Percent change to Percent to units Percent of different bases Unchanged quantity Units table
44 P6.PC.TL.16010102
Level 3
In a box, there are some mangosteens and lemons. If 80 more lemons are put into the box, the percentage of mangosteens will decrease from 70% to 30%. How many mangosteens are there in the box?
3 m
Percent change to Percent to units Percent of different bases Unchanged quantity Units table
45 P6.PC.TL.16010101
Level 3
A store owner had 505 kg of fresh honeydews. The honeydews contained 60% water when fresh. One week later, there was only 50% water left in the honeydews. What was the mass of the honeydews one week later?
3 m
Percent change to Percent to units Percent of different bases Mass Unchanged quantity Units table

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