PSLE
A group of pupils was asked to choose one sandwich from mutton, turkey, tuna and hotdog. 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 mutton and tuna sandwiches?

Sandwiches	Pupils
Mutton	5%
Turkey	35%
Tuna	30%
Hotdog	30%

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

Number of pupils who chose mutton sandwiches = 15

5% of pupils = 15

1% of pupils = 15 ÷ 5 = 3

Percent of pupils who chose mutton sandwiches = 5%
Percent of pupils who chose tuna sandwiches = 30%

Percent of pupils who chose mutton and tuna sandwiches
= 5% + 30%
= 35%

Total number of pupils who chose mutton and tuna sandwiches
= 35 x 3
= 105

Answer(s): 105