Questions

From Worst to Best

326 P6.SP.JC.21061119

Level 3 PSLE
The figure shows taps A and B and an empty tank. At 2 p.m., tap A was turned on. Water flowed into the tank from tap A at a rate of 3.8 litres per minute. After 5 minutes, tap B was turned on. At 2.15 p.m., the tank was half filled with water.

How many litres of water flowed out of tap B in 1 minute?
At 2.30 p.m., what fraction of the tank was filled with water?

5 m

Attempt

Rate more than 1 object Duration am pm Volume of cuboid Filling tank Units method Fraction of a whole

327 P6.SP.JC.17053052

Level 3
Water flows into a tank through Tap A and flows out of the container through Tap B. The capacity of a tank is 40 litres. When only Tap A is turned on, the container is completely filled in 16 minutes. When only Tap B is turned on, it takes ¹₃ hour for all the water to flow out. If both taps are turned on at the same time,

How long does it take to fill 40% of the tank?
How much water has flowed out through Tap B by the time the tank is ³₅ filled with water?

5 m

Attempt

Rate more than 1 object Common time Volume Volume of cuboid Filling tank Fraction of a whole Percent of a whole Units method

328 P6.SP.TL.18012298

Level 3
Recca took 5 hours to travel from Country A to Country B at 60 km/h. Then he travelled from Country B to another country at 1.5 times his original speed. 40% of the distance from Country A to Country B is equal to ¹₃ of the distance from Country B to the next country. Find the average speed for the whole journey and express it in mixed number.

5 m

Attempt

DST triangle Average speed Journey by parts Different speed Duration Fraction of a whole Percent to units Times as many Common numerator

329 P4.FR.JM.17103189

Level 3
Alice poured 18 bottles of water into an empty tank, filling it to ⁶₇ of its capacity. Each bottle had a capacity of 2 ℓ. What was the capacity of the tank?

4 m

Attempt

Fraction of a whole W Multiplication & division Volume Units method

330 P5.DA.JM.17083193

Level 3
Jane was attempting to read a book within a week. On Monday, she had read ³₇ of the book. By Friday, she had read another 60 pages and the ratio of the number of pages read to the total number of pages was 9 : 11. Find the average number of pages Jane should have read each day to complete the book in a week.

5 m

Attempt

Average Time Fraction of a whole Ratio to units Unchanged total Units method

5 per page

10 per page

20 per page