PSLE
A group of pupils was asked to choose one spaghetti set from beef, mutton, chicken and egg. 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 chicken and beef spaghetti sets?

Spaghetti Sets	Pupils
Beef	25%
Mutton	30%
Chicken	5%
Egg	40%

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 = 15

5% of pupils = 15

1% of pupils = 15 ÷ 5 = 3

Percent of pupils who chose beef spaghetti sets = 25%
Percent of pupils who chose mutton spaghetti sets = 30%

Percent of pupils who chose beef and mutton spaghetti sets
= 25% + 30%
= 55%

Total number of pupils who chose chicken and beef spaghetti sets
= 55 x 3 
= 165

Answer(s): 165