86 P6.AG.JC.17080440
Level 3
Some oil is leaking from a crack of a container. After z minutes, the volume of the oil left in the container is given as Volume = 40(100 - 5z) cm3. How much oil will be left in the tank after 10 minutes? Give your answer in litres.
3 m
Algebra in 1 variable Algebra substitution Volume Unit conversion
87 P6.AG.JC.23030112
Level 3 PSLE
The figure is made up of two rectangles, ABHF and FGDE, and two right-angled isosceles triangles, BCH and DCG. BA = 13 cm, DE = 8 cm and BH = w cm. AFE and CHGF are straight lines.
  1. Find the length of AE in terms of w. Give your answer in the simplest form.
  2. Find the total area of the figure when w = 16.
3 m
Algebra in 1 variable Algebra substitution Length Area perimeter Rectangle Isosceles triangle
88 P6.AG.JC.17080459
Level 3
Mrs Jensen paid a total of $38 for 3n pens and 4 markers. Each pen cost $2.
  1. Express the cost of 1 marker in terms of n.
  2. If n = 4, how much did each marker cost?
3 m
Algebra in 1 variable Algebra simplifying Algebra substitution Algebra fractions Money
89 P6.AG.JC.17080457
Level 3
A van travels 20 km in 5r minutes. How far will it travel in 2 hours?
3 m
Algebra in 1 variable Algebra simplifying Algebra fractions Unit conversion Distance apart Units method
90 P6.AG.JC.17080468
Level 3
The cost price of a necklace was $9w. Dorothy decided to make 10% profit from the necklace. During a sale, a customer bought the necklace at a discount of 10%. What was Dorothy's loss?
4 m
Algebra in 1 variable Algebra simplifying Profit & loss

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