6 P5.ST.JC.18121184
Level 3
Adam builds a toy car in 3 hours.
Bryan builds a toy car in 6 hours.
Chris builds a toy car in 5 hours.
If they work together,
how long does it take to build a toy car?
(Give the answer in fraction. Eg 1 13 h)
3 m
Fractions with units F 4 operations Rate more than 1 object
7 P5.ST.JC.18121186
Level 3
Adam and Bryan builds a toy car in 4 hours.
Bryan and Chris builds a toy car in 6 hours.
Chris and Adam builds a toy car in 3 hours.
How long does it take for Adam, Bryan and Chris to build a toy car together?
3 m
Fractions with units F 4 operations Rate more than 1 object
8 P5.SP.JC.22052501
Level 3
10 workers take 9 hours to paint 4 houses. How many hours will 5 workers take to paint 2 houses?
3 m
Rate more than 1 object Duration
9 P5.SP.JC.22020525
Level 3
An empty tank measures 50 cm by 20 cm by 35 cm. Water flows into the tank from Tap A at a rate of 25 ℓ per minute. At the same time, water drains from the tank from Tap B at a rate of 18 ℓ per minute. How long would it take to completely fill the tank?
3 m
Rate more than 1 object Duration Volume of cuboid Filling tank Units conversion
10 P5.SP.JM.17083112
Level 3
A tank measuring 30 cm by 24 cm by 20 cm was being filled by two taps. Tap X delivered water at a rate of 140 cm3 per minute while Tap Y delivered water at a rate of 100 cm3 per minute. How long did the 2 taps take to fill the tank completely? Express your answer in min.
3 m
Rate more than 1 object Duration Volume of cuboid Filling tank

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