PSLE
A group of pupils was asked to choose one spaghetti set from tuna, beef, 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 tuna spaghetti sets?

Spaghetti Sets	Pupils
Tuna	25%
Beef	35%
Turkey	5%
Mutton	35%

Number of pupils who chose turkey spaghetti sets is the least. So it is represented by the shortest bar.

Number of pupils who chose turkey spaghetti sets = 15

5% of pupils = 15

1% of pupils = 15 ÷ 5 = 3

Percent of pupils who chose tuna spaghetti sets = 25%
Percent of pupils who chose beef spaghetti sets = 35%

Percent of pupils who chose tuna and beef spaghetti sets
= 25% + 35%
= 60%

Total number of pupils who chose turkey and tuna spaghetti sets
= 60 x 3 
= 180

Answer(s): 180