Elements and the 'Big Bang' theory. During the formation of the universe some 14 billion years ago in the so-called 'Big Bang', only the lightest elements were formed –hydrogen<span> and </span>helium<span> along with trace amounts of </span>lithium<span> and</span>beryllium<span>.</span>
2/3 miles
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1/3 hour
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2/3 * 3/1
2 miles per hour is the unit rate
Answer: 2 miles per hour
