41 P6.SP.JC.17053055
Level 3
Tap A can fill a tank completely in 2 hours while Tap B takes an hour more to fill the same tank completely. There is a hole at the bottom of the tank which can empty the full tank in 6 hours. How long does it take for the tank to be completely filled if both taps are turned on?
3 m
Rate more than 1 object Duration Volume Same starting time Filling tank Units method
42 P6.SP.JC.17053160
Level 3
The figure shows a rectangular tank measuring 30 cm by 15 cm by 20 cm. Vera poured 558 mℓ of water into the tank. Then she turned on two taps at the same time to fill up Tank with water. Water was flowing from both taps at the same rate. After 5 minutes, both taps were turned off but 1.2ℓ of water had overflowed and was collected in a tray. Find the rate of the flow of water of each tap in millimetres per minute.
3 m
Rate more than 1 object Unit conversion Volume Volume of cuboid Filling tank Units method
43 P6.SP.JC.17080918
Level 3
A rectangular tank measuring 60 cm by 50 cm by 25 cm was to be filled with water by two taps, A and B. Tap A which fills the tank at a rate of 8ℓ per minute was first turned on for 5 minutes before Tap B was turned on as well. If the tank was filled to the brim in a total of 7 minutes from the time when Tap A was first turned on, what is the rate at which Tap B fills the tank? Give the answer in ℓ per minute correct to 1 decimal place.
3 m
Rate more than 1 object Unit conversion Volume Volume of cuboid Filling tank D Place values D Round off
44 P6.SP.JC.17053049
Level 3
Tank A measuring 54 cm by 14 cm by 25 cm contains 4.7 ℓ of water. It is being filled with water flowing from Tap X at 0.9ℓ/min and Tap Y at 995 mℓ/min. Both taps are turned on at the same time. How long does it take to fill up Tank A till it is 75% full? Correct the answer to 1 decimal place.
3 m
Rate more than 1 object Unit conversion Volume Volume of cuboid Filling tank D Place values D Round off Percent of a whole
45 P6.SP.TL.18012232
Level 3
Jake walks to school at an average speed of 4 km/h every day. One day, after walking a distance of 1 km, he realised that his watch was slow. So, he ran at a constant speed and managed to reach his school just on time. Later, he calculated that if he had run at this speed right from the start of the journey, he would have reached his school 5 minutes earlier. What was his running speed?
3 m
DST triangle Average speed Different speed Unit conversion Duration
46 P6.SP.TL.18012235
Level 3
Jesse left home at 6.15 a.m. and drove towards the mountain which was 802 km away. For the first 210 km, she was travelling at 70 km/h. Then she increased her speed by 4 km/h and completed the remaining journey.
  1. How long did she take for her whole journey?
  2. At what time did she reach the mountain?
3 m
DST triangle Average speed Journey by parts Different speed Start end time
47 P6.DA.JC.22032404
Level 2 PSLE
A florist sold flowers from 09 00 to 17 00 last Saturday. The line graph shows the total number of flowers sold from 09 00.

  1. At what time had the florist sold half the total number of flowers sold that day?
  2. During which one-hour interval was there no flower sold? Give your answer in the following format (Eg. 09 00 to 10 00)
  3. What was the average number of flowers sold per hour from 11 00 to 16 00?
3 m
Line graph Average 24-h clock
48 P6.DA.TL.18011915
Level 2 PSLE
Carlo filled a container with water using two taps. He turned on Tap A first and after 4 minutes, he also turned on Tap B. Both taps were turned off at the same time when the container was completely filled without overflowing. The graph shows the amount of water in the container over 16 minutes.
  1. What fraction of the container was filled 4 minutes after Tap A was turned on? Express your answer in the simplest form.
  2. In one minute, how many litres of water flowed from Tap B?
3 m
Line graph Fraction of a whole Volume Filling tank Rate more than 1 object
49 P6.DA.TL.18011917
Level 3
The line graph shows the number of dresses sold by a shop from July to December in 2013.
  1. What was the average number of dresses sold per month from July to December in 2013?
  2. The total number of dresses sold for the same period from July to December in 2012 was 672. Find the percentage decrease in the total number of dresses sold for the same period from 2012 to 2013.
3 m
Line graph Average Time Percent change by
50 P6.SP.JC.17050713
Level 3
Tap A can fill up a tank in 2 hours. Tap B can fill up the same tank in 6 hours. How long will it take to fill up the tank if both taps are turned on at the same time? Express the answer(s) in h.
3 m
Rate more than 1 object Volume Same starting time Filling tank Duration Units method

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