if the wheel of the engine of a train is 30/7m in circumference and makes 7 revolutions in 4 secs then the speed of the train is
?
1 answer:
I dont know ans dont care but iill try its 2 and lima bean
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5in : 200mi
7in : xmi
One inch represents 40 miles.
7 * 40 miles = 280 miles.
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