Instructions

The five bar graphs record the number of vehicles exceeding the speed limit at four locations over a five-day period. Location 1 is a residential street with a 20 kmph limit, location 2 has a 30 kmph limit, location 3 a 50 kmph limit and location 4 (a toll road) a 70 kmph limit.
(Note: kmph- Km per hour)

Question 68

On how many days in locations 1 and 2 are there more than half of the total number of vehicles exceeding speed limit, on that particular day?

Solution

Converting the data given in the chart into a tabular form:


1. Monday - Location(1) - 8 vehicles and Location(2) - 5 vehicles 
Total vehicles on all locations on Monday exceeding the speed limit = 8+5+0+1 = 14
Total vehicles from location(1) and (2) exceeding the speed limit = 13(more than half of total)

2. Tuesday - Location(1) - 2 vehicles and Location(2) - 4 vehicles 
Total vehicles on all locations on Tuesday exceeding the speed limit = 2+4+7+10 = 23
Total vehicles from locations (1) and (2) exceeding the speed limit = 6(not More than half of the total)

3. Wednesday - Location(1) - 2 vehicles and Location(2) - 6 vehicles
Total vehicles on all locations on Wednesday exceeding the speed limit = 2+6+5+1 = 14
Total vehicles from location(1) and (2) exceeding the speed limit = 8(more than half of total)

4. Thursday - Location(1) - 7 vehicles and Location(2) - 4 vehicles
Total vehicles on all locations on Thursday exceeding the speed limit = 7+4+2+8 = 21
Total vehicles from location(1) and (2) exceeding the speed limit = 11(more than half of total)

5. Friday - Location(1) - 4 vehicles and Location(2) - 5 vehicles
Total vehicles on all locations on Friday exceeding the speed limit = 4+5+3+4 = 16
Total vehicles from location(1) and (2) exceeding the speed limit = 9(more than half of total)

Therefore, in a total of 4 days, more than half of the total number of vehicles exceeded the speed limit in locations 1 and 2.
The answer is option C.


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