Question

A group of store managers must assemble 280 displays for an upcoming sale. If they assemble 25 percent of the displays during the first hour and 40 percent of the remaining displays during the second hour, how many of the displays will not have been assembled by the end of the second hour?

• A. 70
• B. 98
• C. 126
• D. 182

Answer 1

The Correct Option is C

25% of 280 is assembled in the first hour: \[ 0.25 \times 280 = 70 \] After the first hour, 280 - 70 = 210 displays remain. In the second hour, 40% of the remaining 210 displays are assembled: \[ 0.40 \times 210 = 84 \] Total displays assembled in 2 hours: \[ 70 + 84 = 154 \] Displays not assembled: \[ 280 - 154 = 126 \] To find how many displays remain, first calculate what has been assembled and subtract from the total.