51 P5.RD.JM.17083245
Level 3
At the ferry transit terminal, 62.5% of the passengers were male and the rest were female. After 81 female passengers entered the terminal, the percentage of the number of female passengers became 60%. Find the number of female passengers at the terminal at first.
4 m
Percent of a set Percent change to Percent to units Unchanged quantity Units table
52 P6.RD.TL.16010159
Level 3
A bakery baked some kaya, strawberry and milo cupcakes. For every 3 kaya cupcakes that were baked, 2 milo cupcakes were baked. For every 4 kaya cupcakes that were baked, 3 strawberry cupcakes were baked.
  1. Find the ratio of the number of kaya cupcakes to strawberry cupcakes to milo cupcakes baked.
  2. After the bakery baked another 130 milo cupcakes, 30% of the cupcakes now were milo cupcakes. How many kaya cupcakes did the bakery bake?
4 m
Finding ratio Percent to units Repeated identity Unchanged quantity Units table Units manipulation
53 P5.RD.JM.17083247
Level 3
23 of Sean's savings comprised of 20-cent coins and 50-cent coins. Sean used some 20-cent coins to purchase a toy. The number of 50-cent coins left was 50% more than the number of 20-cent coins left. Given that Sean had 100 more 50-cent coins than 20-cent coins left in the end, find the amount of money Sean spent on the toy.
4 m
Fraction of a whole Fraction to units Percent of a set Percent to units Money More than or less than Unchanged quantity Units table
54 P6.RA.TL.16010146
Level 3
The number of boys to the number of girls in Primary 4 Kindness was 4 : 7. The number of boys to the number of girls in Primary 4 Joy was 4 : 7. Both classes had the same number of boys. When 18 girls from Primary 4 Kindness joined Primary 4 Joy, the ratio of the number of boys to the number of girls in Primary 4 Kindness became 2 : 3. Find the total enrolment of both classes.
4 m
Ratio to units Equal stage Unchanged quantity Internal transfer Unchanged total Units table
55 P6.FR.TL.16010101
Level 3
At a zoo, there were 35 as many adults as children at first. After 46 adults left, there were 116 more children than adults remaining at a zoo. How many adults were at the zoo at first?
3 m
Fraction to units More than or less than Unchanged quantity Units equations Model & units table
56 P5.RA.JM.17083159
Level 3
There were 182 red, blue and green marbles in a box. 26 green marbles were removed from the box and the ratio of the number of red marbles to the number of blue marbles to the number of green marbles became 4 : 3 : 5. Then some yellow marbles were added and the ratio of the number of green marbles to the number of yellow marbles was 13 : 9.
  1. What was the ratio of the number of red marbles to the number of blue marbles to the number of green marbles at first?
  2. How many marbles were in the box in the end?
4 m
Finding ratio Ratio to units Repeated identity Unchanged quantity Units table
57 P5.RA.JC.17083240
Level 3
Janet had some pencils, erasers and rulers. The ratio of the number of pencils to the number of erasers was 5 : 1. After giving away 16 erasers, the ratio of the number of rulers to the number of erasers was 4 : 1. Janet bought another 184 rulers. As a result, there were an equal number of pencils and rulers. How many erasers did she have at first?
4 m
Ratio to units Equal stage after Unchanged quantity Units equations Units table
58 P5.ST.JC.18121164
Level 3
Adam has some blue stickers and red stickers.
If 50 blue stickers are added, 70% of the stickers will be red stickers.
If 200 blue stickers are added, 40% of the stickers will be red stickers.
  1. How many blue stickers are there?
  2. How many red stickers are there?
4 m
Percent of a set Percent to units Unchanged quantity Double if Units table Units equations
59 P5.PC.JC.17083122
Level 3
Jane's savings is 20% more than Darwin's savings. If Jane's savings is decreased by 20%, their total savings will be $980. How much is Jane's savings?
3 m
Percent change by Percent of different bases Money More than or less than Unchanged quantity Units table Decimal units
60 P5.ST.JC.18121165
Level 3
Adam has some blue stickers and red stickers.
If 50 blue stickers are removed, 40% of the stickers will be red stickers.
If 200 blue stickers are removed, 70% of the stickers will be red stickers.
  1. How many blue stickers are there?
  2. How many red stickers are there?
4 m
Percent of a set Percent to units Unchanged quantity Double if Units table Units equations

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