Discussion
The given bar graph shows the number of accidents in a city during the first 6 months of a year. Examine the bar graph and answer the question.
What is the percentage of decrease in the number of accidents from May to June?
Answer: C
The decrease is 22 6/7 per cent. The graph shows 35 accidents in May and 27 in June, a decrease of 8. The percentage decrease is 8/35 x 100 = 22 6/7 per cent. The other options are computed from other pairs of months: for example 15 4/7 per cent and 27 3/7 per cent do not match 8/35. Percentage decrease is always worked out on the earlier figure, so the base is 35 for May and not 27 for June. Using 27 as the base would give 29 17/27 per cent, which is not an option.
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