To find out how many marbles were originally in each bag, we can start by setting up the problem based on the information given:
- Each of the 5 bags originally has \(m\) marbles. Therefore, the total number of marbles originally is \(5m\).
- After adding 10 marbles to each bag, each bag has \(m + 10\) marbles.
- The total number of marbles after adding the 10 marbles to each bag would then be \(5 \times (m + 10)\).
- According to the problem, this total equals 80 marbles.
Now we can set up the equation based on this:
\[ 5(m + 10) = 80 \]
This is the equation that can be solved to determine how many marbles were originally in each bag.
So, among the options A, B, C, and D, the correct option should express the equation:
\[ 5(m + 10) = 80 \]
If you have specific options listed as A, B, C, and D, kindly share those so I can help you identify the correct one.
1 answer