Robin had 40 apples to give to 3 groups of children. The first group ate 1/8 of the total apples. The second group ate 4 of the total apples. The third group ate 20% of the total apples. How many apples were left?
40 * 1/8 = 5
Assuming "total" is the beginning number, 40 * .2 = 8
40 - 5 - 4 - 8 = ?
Cg u u
To find out how many apples were left, we need to subtract the number of apples eaten by each group from the total number of apples Robin had.
1. First, let's find out how many apples the first group ate. They ate 1/8 of the total apples. To calculate that, we need to multiply 1/8 by the total number of apples Robin had:
Total apples eaten by the first group = (1/8) * 40
2. Next, let's find out how many apples the second group ate. They ate 4 apples, which is a known amount.
3. Now, let's find out how many apples the third group ate. They ate 20% of the total apples. To calculate that, we need to multiply 20% (or 0.20 in decimal form) by the total number of apples Robin had:
Total apples eaten by the third group = 0.20 * 40
4. Finally, we can calculate the number of apples left by subtracting the total apples eaten by each group from the total apples Robin had:
Apples left = Total apples - Apples eaten by the first group - Apples eaten by the second group - Apples eaten by the third group
Let's perform the calculations:
1. Total apples eaten by the first group = (1/8) * 40 = 5 apples
2. Total apples eaten by the second group = 4 apples
3. Total apples eaten by the third group = 0.20 * 40 = 8 apples
Apples left = 40 - 5 - 4 - 8 = 23 apples
Therefore, there are 23 apples left after the three groups of children have eaten their share.