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

Noodle Sets	Pupils
Tuna	35%
Vegetarian	40%
Egg	5%
Hotdog	20%

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

Number of pupils who chose egg noodle sets = 20

5% of pupils = 20

1% of pupils = 20 ÷ 5 = 4

Percent of pupils who chose tuna noodle sets = 35%
Percent of pupils who chose vegetarian noodle sets = 40%

Percent of pupils who chose tuna and vegetarian noodle sets
= 35% + 40%
= 75%

Total number of pupils who chose egg and tuna noodle sets
= 75 x 4 
= 300

Answer(s): 300