Question

tom reads 15 pages daily. to find days needed for a 180 - page book, which equation works?
15d = 180

d - 15 = 180

15 + d = 180

d + 15 = 180

Explanation:

Step1: Understand the relationship

Tom reads 15 pages per day. Let \( d \) be the number of days. The total pages read is daily pages times days, which should equal 180 (the total pages in the book). So the relationship is \( 15 \times d = 180 \), or \( 15d = 180 \).

Step2: Analyze other options

• For \( d - 15 = 180 \), this would imply days minus 15 equals total pages, which doesn't make sense in this context.
• For \( 15 + d = 180 \), adding days to daily pages to get total pages is illogical.
• For \( d \div 15 = 180 \) (the last option, assuming a typo as \( d - 15 \) was maybe a typo but the correct operation is multiplication here), dividing days by daily pages doesn't relate to total pages.

Answer:

\( 15d = 180 \) (the first equation)