meredith picked 4 times as many green apples as red apples. if she picked a total of 20 apples how many green apples did she pick?
To solve this problem, we can set up an equation based on the given information. Let's represent the number of red apples as 'r' and the number of green apples as 'g'.
According to the problem, Meredith picked four times as many green apples as red apples, so we can express this relationship as:
g = 4r (Equation 1)
The problem also states that she picked a total of 20 apples, so we can express this as:
r + g = 20 (Equation 2)
Now, let's solve the system of equations by substituting Equation 1 into Equation 2:
r + 4r = 20
Combining like terms:
5r = 20
Divide both sides of the equation by 5:
r = 4
So, Meredith picked 4 red apples.
To find the number of green apples, substitute the value of 'r' back into Equation 1:
g = 4 * 4
g = 16
Therefore, Meredith picked 16 green apples.
4a + a = 20
5a = 20
a = 4
She picked 16 green apples