PSLE
A group of pupils was asked to choose one burger from vegetarian, hotdog, tuna and egg. 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 tuna and vegetarian burgers?

Burgers	Pupils
Vegetarian	20%
Hotdog	10%
Tuna	30%
Egg	40%

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

Number of pupils who chose hotdog burgers = 40

10% of pupils = 40

1% of pupils = 40 ÷ 10 = 4

Percent of pupils who chose tuna burgers = 30%
Percent of pupils who chose vegetarian burgers = 20%

Percent of pupils who chose tuna and vegetarian burgers
= 30% + 20%
= 50%

Total number of pupils who chose hotdog and egg burgers
= 50 x 4
= 200

Answer(s): 200