Rusty is training for a triathlon. He runs 4 miles for every 9 miles he bikes. At the end of his training, he has run a total of 92 miles. How many total miles did he bike? ( if someone understands this, please explain how you got your answer :))

If m∠abc = 70°, what is m∠abd? justify your reasoning.  using the addition property of equality, 40 + 70 = 110, so m∠abd = 110°.  using the subtraction property of equality, 70 − 30 = 40, so m∠abd = 30°.  using the angle addition postulate, 40 + m∠abd = 70. so, m∠abd = 30° using the subtraction property of equality.  using the angle addition postulate, 40 + 70 = m∠abd. so, m∠abd = 110° using the addition property of equality.