The graph shows the different types of sandwiches the pupils like.
- How many pupils like ham?
- How many pupils like jam and salmon?
- How many more pupils like salmon than jam?
- How many pupils are there in the group altogether?
(a)
Number of pupils that like ham
= 4 x 2
= 8
(b)
Number of pupils that like jam and salmon
= (6 + 3) x 2
= 9 x 2
= 18
(c)
Number of more pupils like salmon than jam
= (6 - 3) x 2
= 3 x 2
= 6
(d)
Total number of pupils in the group
= (4 + 5 + 6 + 3) x 2
= 18 x 2
= 36
Answer(s): (a) 8; (b) 18; (c) 6; (d) 36