Mr . jackson sold 3 computer monitors in the 1st year. in the 2nd year, he sold 4 times as many monitors as the 1st year. in the 3rd year ,he was able to sell 6 times as many monitors as the first year.
how many monitors did mr . jackson sell in three years ?
he sold the monitors for $185 each.
how much money did mr . jackson earn ?

Acompany manufactures three types of cabinets. it makes 110 cabinets each week. in the first week, the sum of the number of type-1 cabinets and twice the number of type-2 cabinets produced was 10 more than the number of type-3 cabinets produced. the next week, the number of type-1 cabinets produced was three times more than in the first week, no type-2 cabinets were produced, and the number of type-3 cabinets produced was the same as in the previous week.