Sarah and Rachel each have apps on their phones.
• The number of apps on Sarah’s phone can be represented by x.
• The number of apps on Rachel’s phone is 4 times the number of apps on Sarah’s phone.
• The total number of apps on both girls’ phones is 115.
What is x, the number of apps on Sarah’s phone?
Let's say the number of apps on Sarah's phone is x.
According to the given information, the number of apps on Rachel's phone is 4x (4 times the number of apps on Sarah's phone).
The total number of apps on both girls' phones is 115, so we can create the following equation:
x + 4x = 115
Combining like terms:
5x = 115
Dividing both sides of the equation by 5:
x = 23
Therefore, the number of apps on Sarah's phone, represented by x, is 23.