You are given a math word problem and you are supposed to make use of mathematical concepts like probability, combinatorics, linear equations, sequences/series, or simple operators like addition, subtraction, division, or multiplication to answer the given question. Choose the best option from the 5 given options and report that option.

Q: Question: A car during its journey travels 30 minutes at a speed of 60 kmph, another 45 minutes at a speed of 80 kmph, and 1 hours at a speed of 70 kmph.The average speed of the car is

 Option A: 63.07 kmph

 Option B: 64 kmph

 Option C: 75 kmph

 Option D: 80 kmph

 Option E: None of these

A: Option D
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Q: Question: If a man crosses a 600 m long street in 5 minutes. What is his speed?

 Option A: 7 km/hr

 Option B: 7.1 km/hr

 Option C: 7.2 km/hr

 Option D: 8 km/hr

 Option E: 8.5 km/hr

A: Option C
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Q: Question: How many meters are there in 660 centimeters?

 Option A: 6.6 meters

 Option B: 660 meters

 Option C: 600 meters

 Option D: 6.5 meters

 Option E: 6 meter

A:
Option A
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