PSLE A group of pupils was asked to choose one spaghetti set from beef, egg, chicken and turkey. 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 beef and chicken spaghetti sets?
Spaghetti Sets |
Pupils |
Beef |
10% |
Egg |
30% |
Chicken |
20% |
Turkey |
40% |
Number of pupils who chose beef spaghetti sets is the least. So it is represented by the shortest bar.
Number of pupils who chose beef spaghetti sets = 20
10% of pupils = 20
1% of pupils = 20 ÷ 10 = 2
Percent of pupils who chose beef spaghetti sets = 10%
Percent of pupils who chose chicken spaghetti sets = 20%
Percent of pupils who chose beef and chicken spaghetti sets
= 10% + 20%
= 30%
Total number of pupils who chose beef and chicken spaghetti sets
= 30 x 2
= 60
Answer(s): 60