Questions

From Best to Worst

166 P6.DA.TL.18011920

Level 3
The average points accumulated by 6 children is 91.5. They have all attained different points which are whole numbers. The lowest point is 70 while the highest point is 100.

Find the average points achieved by the 4 children whose marks lie between the highest and the lowest.
Find the smallest possible second lowest mark among these 6 children.
Find the largest possible second lowest mark among these 6 children.

5 m

Attempt

167 P6.SP.TL.18012282

Level 3
Building A and Building B were 360 km apart. A car travelled from Building A towards Building B. At the same time, a bus started from Building B to Building A. After travelling 1¹₂ hours, the two vehicles were still 144 km apart. If the ratio of the average speed of the bus to that of the car was 4 : 5, find

the average speed of the bus.
the time taken for them to meet. travelling the rest of the journey

4 m

Attempt

DST triangle Average speed Different starting point Same starting time Distance apart Direct ratio Common time Duration Units method

168 P6.FR.JO.21042208

Level 3 PSLE
Sue baked some tarts. She gave ¹₄ of the tarts to her relatives and 70 to her friends. She was left with ²₅ of the tarts. She packed these into 10 boxes. Some boxes contained 5 tarts while the rest contained 10.