PSLE The table shows the times taken by four boys to complete a race.
- Who was the first in the race? Give your answer in number. (Eg 1)
- What was the average time taken by the 4 boys to complete the race?
Boys |
Time |
(1) Bryan |
12.4 s |
(2) Christian |
11.2 s |
(3) Adam |
11.8 s |
(4) David |
10.8 s |
(a)
1st in the race = (4) David
10.8 s2nd in the race = (2) Christian
11.2 s3rd in the race = (3) Adam
11.8 s4th in the race = (1) Bryan
12.4 s (1) Bryan was the last in the race.
(b)
Total time taken by the 4 boys
= 12.4 + 11.2 + 11.8 + 10.8
= 46.2 s
Average time taken by the 4 boys
= 46.2 ÷ 4
= 11.55 s
Answer(s): (a) 1; (b) 11.55 s