The number of cars passing the road near a colony from 6 am to 12 noon has been shown in the following histogram.
What is the maximum change percentage in the number of cars as compared to the previous hour?(correct to 2 decimal places)
Show answer & explanation
Correct answer: B
Explanation
The correct answer is option 2 i.e. Decrease of 52.63%
Percentage change in the number of cars between 6 AM and 7 AM = (105 - 70)/70 × 100% = 50%
Percentage change in the number of cars between 7 AM and 8 AM = (130 - 105)/105 × 100% = 23.8%
Percentage change in the number of cars between 8 AM and 9 AM = (115 - 130)/130 × 100% = -11.54%
Percentage change in the number of cars between 10 AM and 11 AM = (95 - 115)/115 × 100% = -17.39%
Percentage change in the number of cars between 11 AM and 12 PM = (45 - 95)/95 × 100% = -52.63 (Negative sign indicates percentage decrease)
The maximum change percentage in the number of cars in comparison to the previous hour is 52.63%.