121 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
122 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
123 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
124 P4.WN.PR.17100374
Level 2
In the training, Martin took 3 min 48 s to complete the 1st lap and 16 s longer to complete the 2nd lap. What was the total time Martin had taken to complete the two laps in the training? (Leave your answer in min and s)
2 m
W 4 operations Time Duration Model Comparison
125 P4.WN.PR.17100373
Level 2
The table shows the time taken by 5 girls to fold a paper rose. What is the total time taken by the 5 girls? Write the answer in minutes and seconds.
2 m
W 4 operations Duration Table
126 P6.SP.JC.19010102
Level 3
5 tailors can sew 10 shirts in 10 hours on average. How long will 50 tailors take to sew 50 shirts on average?
3 m
Rate 1 object Duration Units time
127 P6.SP.TL.18012225
Level 3
Min and Candy take 1 hour to clean the kennel together. If Min takes 3 hours to clean the kennel on her own, how long will it take Candy to clean the kennel alone?
3 m
Rate more than 1 object Duration
128 P6.SP.TL.18012226
Level 3
It takes Angel 9 hours to sew a blouse by herself. If Belina helps her, they will take 5 hours to sew the blouse. How long will Belinda take to sew the blouse by herself? Express the answer in mixed number.
3 m
Rate more than 1 object Duration
129 P6.SP.TL.18012228
Level 3
Ronnie and Dave, together, can clean a room in 3 hours. If Ronnie is cleaning the room alone, he can only complete the task in 9 hours. How long will Dave take to clean a room all by himself? Express the answer in mixed number.
3 m
Rate more than 1 object Duration Mixed numbers
130 P6.SP.TL.18012230
Level 3
8 workers take 10 hours to build 4 bookshelves. How many hours will 6 workers take to build 2 bookshelves? Express the answer in mixed number of hours.
3 m
Rate more than 1 object Duration Mixed numbers

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