391 P5.RD.JM.17083302
Level 3
Titus bought some custard and apple pastry puffs in the ratio of 7 : 6. After Titus's classmates ate an equal number of the two types of pastry puffs, there were 35% fewer apple than custard pastry puffs. In the end, there were 165 pastry puffs left. How many pastry puffs of each type were eaten?
4 m
Ratio to units Percent to units More than or less than Equal stage Unchanged difference Units table
392 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
393 P5.DA.JM.17083191
Level 3
A list of 13 numbers has an average of 330. When two numbers are deleted from the list, the average of the remaining numbers is 313.
  1. What is the sum of 13 numbers?
  2. What is the bigger number between the two numbers that have been deleted given that the difference between the two numbers is 1?
3 m
Averaging out 2 Averages More than or less than Units method
394 P6.SP.TL.18012258
Level 3
City A and City B is 760 km apart. At 09 00, Sunny, travelling at a constant speed, left City A for City B. At the same time, Ron set off from City B for City A at a constant speed which was 9 km/h faster than Sunny. Find Ron's speed if they met at 17 00.
3 m
DST triangle Average speed Different starting point Same starting time Meeting point Common time More than or less than
395 P6.PC.JC.23100214
Level 2 PSLE
Carl had a collection of rulers, pens and markers. He had 85 rulers. 30% of his collection was pens. He had 51 fewer pens than markers.
  1. How many pens did Carl have?
  2. Carl gave away some pens. His total collection decreased by 20%. What percentage of his collection was pens after that?
4 m
Percent of a set Percent change by More than or less than Units method

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