PSLE A group of pupils was asked to choose one spaghetti set from beef, chicken, turkey and mutton. The table represents the pupils' choices. The pupils' choices were also represented by a bar graph but the names of the spaghetti sets were not shown. What was the total number of pupils who chose turkey and beef spaghetti sets?
Spaghetti Sets |
Pupils |
Beef |
20% |
Chicken |
5% |
Turkey |
50% |
Mutton |
25% |
Number of pupils who chose chicken spaghetti sets is the least. So it is represented by the shortest bar.
Number of pupils who chose chicken spaghetti sets = 10
5% of pupils = 10
1% of pupils = 10 ÷ 5 = 2
Percent of pupils who chose turkey spaghetti sets = 50%
Percent of pupils who chose beef spaghetti sets = 20%
Percent of pupils who chose turkey and beef spaghetti sets
= 50% + 20%
= 70%
Total number of pupils who chose chicken and mutton spaghetti sets
= 70 x 2
= 140
Answer(s): 140