PSLE
A group of pupils was asked to choose one burger from beef, egg, tuna and mutton. The table represents the pupils' choices. The pupils' choices were also represented by a bar graph but the names of the burgers were not shown. What was the total number of pupils who chose beef and tuna burgers?

Burgers	Pupils
Beef	10%
Egg	15%
Tuna	30%
Mutton	45%

Number of pupils who chose beef burgers is the least. So it is represented by the shortest bar.

Number of pupils who chose beef burgers = 40

10% of pupils = 40

1% of pupils = 40 ÷ 10 = 4

Percent of pupils who chose beef burgers = 10%
Percent of pupils who chose tuna burgers = 30%

Percent of pupils who chose beef and tuna burgers
= 10% + 30%
= 40%

Total number of pupils who chose beef and tuna burgers
= 40 x 4
= 160

Answer(s): 160