Math help for pre algebra
A dripping faucet wastes 3 cups of water every 24 hours. How much water is wasted in a week?
There are 3 cups of water wasted every 24hrs.
How much is wasted in 1 week.
First we know that there are 24hrs in every day and 7 days in every week.
So there are 3 cups of water wasted every day(every 24hrs).
To find out how many cups of water are wasted in a week you would do: 3 cups * 7 days since there are 7 days in a week
3*7 = 21 cups of water wasted in a week.
PROBLEM: 3 cups water wasted in 24 hours (1 day)
FIND: How many cups are wasted in a week (7 days)?
SOLUTION 1: You can add 3 for each day of the week so 3+3+3+3+3+3+3 = 21 Cups
SOLUTION 2: Since we are using the same number for each day, we can multiply 3*7 = 21 Cups
Either solution will get you the answer you need but the purpose of this question if to go with Solution 2 which would be faster when the problem becomes more complex.
24 hours mean 1 day.
In 1 day, cups of water wasted = 3. (This is given in your question)
Therefore in 1*7 days, cups of water wasted = 3*7 = 21
Now 7 days mean 1 week.
Therefore, in 1 week 21 cups of water are wasted.