The bakery has a full tray of brownies. One customer comes in and buys 1/4 of the tray. The next customer buys 1/5 of what remained in the tray. How much did they buy and how much remains in the tray?
1/4 + 1/5
Find the common denominators, change to equivalent fractions, and add these two numbers.
Then subtract from 20/20.
To solve this problem, we can work step by step.
1. Find out how much the first customer bought:
- The first customer buys 1/4 of the tray.
- Since fractions are easier to work with when the denominator is the same, let's find a common denominator. The common denominator between 4 and 5 is 20.
- The first customer bought 1/4 * 20/20 = 5/20 of the tray.
2. Calculate how much remained in the tray after the first customer:
- The first customer bought 5/20 of the tray, so the remaining amount is 20/20 - 5/20 = 15/20.
3. Determine how much the second customer bought:
- The second customer buys 1/5 of what remained in the tray.
- The remaining amount after the first customer was 15/20 of the tray.
- The second customer bought 1/5 * 15/20 = 15/100 = 3/20 of the tray.
4. Calculate the final amount remaining in the tray:
- The second customer bought 3/20 of the tray, so the remaining amount is 15/20 - 3/20 = 12/20.
So, the first customer bought 5/20 of the tray, the second customer bought 3/20 of the tray, and 12/20 of the tray remains.