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

Tacos	Pupils
Beef	15%
Tuna	70%
Chicken	5%
Mutton	10%

Number of pupils who chose chicken tacos is the least. So it is represented by the shortest bar.

Number of pupils who chose chicken tacos = 10

5% of pupils = 10

1% of pupils = 10 ÷ 5 = 2

Percent of pupils who chose beef tacos = 15%
Percent of pupils who chose tuna tacos = 70%

Percent of pupils who chose beef and tuna tacos
= 15% + 70%
= 85%

Total number of pupils who chose chicken and beef tacos
= 85 x 2 
= 170

Answer(s): 170