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

Sandwiches	Pupils
Egg	5%
Chicken	45%
Tuna	15%
Turkey	35%

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

Number of pupils who chose egg sandwiches = 20

5% of pupils = 20

1% of pupils = 20 ÷ 5 = 4

Percent of pupils who chose egg sandwiches = 5%
Percent of pupils who chose tuna sandwiches = 15%

Percent of pupils who chose egg and tuna sandwiches
= 5% + 15%
= 20%

Total number of pupils who chose egg and tuna sandwiches
= 20 x 4
= 80

Answer(s): 80