Mia spent one third of her money on lunch. at lunch, her friend gave her $2.50 to repay a loan. then mia spent $3.25 for a movie ticket and $.75 for a snack. she had $4.90 left. how much did mia have before lunch?

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.