A and B sell apples. On the first day, A sells 1 yuan for every three apples, and B sells 1 yuan for every two apples; on the second day, A and B sell together, and sell 2 yuan for every 5 apples. It is known that the apples brought by each person every day are the same fixed value, and the apples are always sold out. If the two people's total income on the second day is $120, what is their total income on the first day?
甲乙两人卖苹果，第一天甲每三个苹果卖1元，乙每两个苹果卖1元；第二天甲乙合起来卖，每5个苹果卖2元．已知每人每天带来的苹果是一个相同的定值，并且苹果总是全部卖完．如果第二天两人的总收入为120元，那么第一天他们的总收入是多少元？
<gadget id="calculator">150 / 3</gadget>
<output>50</output>

<gadget id="calculator">150 / 2</gadget>
<output>75</output>

<gadget id="calculator">50 + 75</gadget>
<output>125</output>

<result>125</result>