On Tuesday, Sally picks 30 / 2 = 15 seashells. In total, Sally picks 30 + 15 = 45 seashells. The total amount of money Sally can make is 45 * $1.20 = $54.
The answer: 54
Reverse engineering the question: Sally picks 30 seashells on Monday. On Tuesday, she picks half as many seashells as she did on Monday. If she can sell each seashell for $1.20, how much money can she make if she sells all of her seashells?

Trash:400 / 2 = 200. 400 - 200 = 200 remaining. Work:200(.40) = 80. 200 - 80 = 120 remaining.
The answer: 120
Reverse engineering the question: Steve has 400 new emails in his inbox. He moves half of them to the trash, and 40 percent of the remaining emails to his work folder. How many emails are left in the inbox?

First find how many chairs Jackson needs for the four - seat tables by multiplying the number of four - seat tables by 4: 4 chairs / table * 6 tables = 24 chairs. Next find how many chairs Jackson needs for the six - seat tables by multiplying the number of six - seat tables by 6: 6 chairs / table * 12 tables = 72 chairs. Now add the number of chairs for the four - and six - seat tables to find the total number of chairs Jackson needs: 24 chairs + 72 chairs = 96 chairs.
The answer: 96
Reverse engineering the question: Jackson is buying chairs for his restaurant. He has 6 tables with 4 seats and 12 tables with 6 seats. How many chairs total does Jackson need to buy?

The total capacity of the 40 chairs was 40 * 2 = 80 people. If 2 / 5 of the chairs were unoccupied, 2 / 5 * 80 = 32 people missed the board meeting since the number of members was the same as the chair's capacity. The number of board members who attended the meeting was 80 - 32 = 48.
The answer: 48
Reverse engineering the question:
In a conference room, 40 chairs with a capacity of 2 people each were arranged in rows in preparation for the board meeting of a company, whose number of members was the same as the chairs' capacity. If 2/5 of the chairs were not occupied, and the rest each had two people, calculate the number of board members who did attend the meeting.