Solve.
-A publisher printed 84 million pages in its production process last year. If this represents a 120 % increase over the number of pages printed the previous year, how many pages were printed the previous year? (Round to the nearest hundredth million, if necessary.)
A) 14,400 million pages
B) 700 million pages
C) 70 million pages
D) 144 million pages

Question

Solve.
-A publisher printed 84 million pages in its production process last year. If this represents a  120 %  increase over the number of pages printed the previous year, how many pages were printed the previous year? (Round to the nearest hundredth million, if necessary.)
A) 14,400 million pages
B) 700 million pages
C) 70 million pages
D) 144 million pages

Quizplus · Accepted Answer

The increase is 120% of the previous year's production, meaning the 84 million pages represent 220% of the previous year's production (100% + 120% = 220%). To find the original amount (100%), divide the new production by 2.2 (since 220% corresponds to a factor of 2.2). 84 million / 2.2 = 38.18 million pages, rounding to the nearest hundredth million doesn't apply here as the correct calculation actually results in 38.18 million pages, not 70 million. The correct calculation should be: Let $ x $ be the number of pages printed the previous year. Then, $ x + 1.20x = 84 $ million pages, which simplifies to $ 2.20x = 84 $ million. Solving for $ x $ gives $ x = \frac{84}{2.20} = 38.18 $ million pages. Therefore, the explanation mistakenly provided an incorrect answer and calculation process. The correct process to find the original number of pages printed the previous year involves dividing the total pages printed last year by the total percentage increase represented as a decimal (in this case, 2.2 for 220%).

Solve. -A Publisher Printed 84 Million Pages in Its Production Process