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The given histogram shows the frequency distribution of the speed of cars passing though at a particular spot on a highway. Study the graph and answer the question that follows.  The number of cars with speed between 70 km/h and 80 km/h is what percentage more than the number of the cars with speed between 50 km/h and 60 km/h? (correct to one decimal place)

The given histogram shows the frequency distribution of the speed of cars passing though at a particular spot on a highway. Study the graph and answer the question that follows.  The number of cars with speed between 70 km/h and 80 km/h is what percentage more than the number of the cars with speed between 50 km/h and 60 km/h? (correct to one decimal place) Correct Answer 28.6%

Given:

The number of cars with speed between 70 - 80 km/h = 90

The number of cars with speed between 50 - 60 km/h = 70

Formula used:

Percentage increased = (greater value - smaller value)/smaller value × 100

Calculation:

Percentage increased = (greater value - smaller value)/smaller value × 100

⇒ Percentage increased = (90 - 70)/70 × 100

⇒ Percentage increased = 20/70 × 100

⇒ Percentage increased = 28.6%

∴ The percentage increase is 28.6%.

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