Answer :
Jin completed 8 pages in math and 12 pages in science, totaling 20 pages. Given this is 25% of the total, the combined workbook pages amount to 80. With 32 pages in math, the science workbook contains 48 pages.
The correct option is b.48
Jin completed a total of 20 pages (8 pages in math + 12 pages in science) out of the combined total number of pages in both workbooks. Since this accounts for 25% of the total pages, we can set up the equation:
[tex]\[ \frac{20}{\text{Total pages}} = \frac{25}{100} \][/tex]
Solving for the total number of pages, we find:
[tex]\[ \text{Total pages} = \frac{20 \times 100}{25} = 80 \][/tex]
Now, knowing that there are 32 pages in Jin's math workbook, we can find the number of pages in his science workbook:
[tex]\[ \text{Total pages} = \text{Math pages} + \text{Science pages} \][/tex]
[tex]\[ 80 = 32 + \text{Science pages} \][/tex]
[tex]\[ \text{Science pages} = 80 - 32 = 48 \][/tex]
There are 48 pages in Jin's science workbook.
Therefore the correct option is b.48
The question probable may be:
Jin completed 8 pages in his math workbook and 12 pages in his science workbook. This is 25% of the total number of pages in both workbooks together. If there are 32 pages in his math workbook, how many pages are there in his science workbook?
A. 20
B. 48
C. 80
D. 128
