Answer Key
12a The first graph shows the number of
grocery stores that closed in Britain
(in thousands) between 1961 and 1995.
Between 1961 and 1971 there was a
steep fall in the number of grocery
stores closing in Britain and then a
gradual fall until 1980. Very few stores
closed between then and 1995.
12b The second graph shows the increase
in the types of products sold at
supermarkets between 1950 and 1995.
The types of products stocked
increased significantly from 550 to
19000 between 1950 and 1995.
12c
The third graph shows the growth of
supermarkets in Britain between 1985
and 1996.
During this time there was a steady
growth in the number of supermarkets
from 400 to 1000.
13 The number of hamburgers sold at
Harry's over a one-year period.
14 The pattern is variable.
15 To get a clear picture of the trend in
sales over the year.
16 The simple past tense.
17
Suggested answers
a The sale of hamburgers was stable through-
out January, February and most of March,
b Fewer hamburgers were sold in April than
in March according to this graph.
с There was a dramatic rise in the sale of
hamburgers between June and August
when numbers increased from 1900 to
3000.
d Hamburger sales peaked in August when
3000 were sold.
e The lowest sales of hamburgers were in
October when they dropped to 1250 for
the month,
f Hamburgers were more popular in
summer than in winter according to this
graph.
Model answer for the Follow-up activity on
page 72
The graph shows the fluctuation in the
number of people at a London underground
station over the course of a day. According to
the graph there is a sharp increase between
6.00 and 8.00 in me morning, with 400 people
using the station at 8 o'clock. After this, the
numbers fall dramatically to less than 200 at
10 o'clock. Between 11.00 and 3.00 the
number of people rises and falls evenly with a
plateau around lunchtime of just under 300
people using the station. Numbers then
decline, with the lowest number being
recorded at 4,00 in the afternoon. There is
then a rapid rise between 4.00 and 6pm
during the evening rush hour with a peak of
380 people at 6 pm. After 7 pm numbers fall
significantly, with only a slight increase again
just after 8 pm, tailing off after 9 pm. The
graph shows that the station is most crowded
in the early morning and early evening rush-
hour periods.
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