Andrew is making a plan to complete a class math assignment. He has 48 problems to complete over 5 days. He decides to complete the assignment is such a way that his total number of completed problems doubles every day. He realizes that that number must be 48 by the end of the fifth day.

How many problems does Andrew need to solve on the first day?

3. I think

Because you take the total number of problems (48) and divide that by 2 = 24. Then divide that by 2 = 12. And divide that by 2= 6. And divide that by 2 = 3.

He needs to complete 3 problems on the first day for the number of problems completed to double each day for 5 days to equal 48.

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To find out how many problems Andrew needs to solve on the first day, we can work backwards from the given information.

We know that by the end of the fifth day, Andrew must have solved a total of 48 problems. This means that the number of problems he solved on the fifth day is 48.

Since Andrew doubles the number of problems he solves each day, we can find the number of problems he solved on the fourth day by dividing 48 by 2: 48 / 2 = 24.

Following the same logic, we can calculate the number of problems he solved on the third day: 24 / 2 = 12.

Continuing, we find the number of problems he solved on the second day: 12 / 2 = 6.

Finally, we can calculate the number of problems Andrew solved on the first day: 6 / 2 = 3.

Therefore, Andrew needs to solve 3 problems on the first day.