10 blue,6 green,2 yellow
To determine the number of bikes of each color, we define variables based on the relationships provided. After setting up an equation, we find there are 4 yellow bikes, 8 blue bikes, and 6 green bikes in the bike rack.
Let's denote the number of yellow bikes as y. According to the problem, there are 4 more blue bikes than yellow bikes, so the number of blue bikes is y + 4. It's also given that there are 2 fewer yellow bikes than green bikes, meaning the number of green bikes is y + 2. The total number of bikes is the sum of yellow, blue, and green bikes, which should equal 18:
y + (y + 4) + (y + 2) = 18
Combining like terms gives us:
3y + 6 = 18
Subtracting 6 from both sides:
3y = 12
Dividing both sides by 3:
y = 4
So, there are 4 yellow bikes. Hence, there are 4 + 4 = 8 blue bikes, and 4 + 2 = 6 green bikes.
There are 8 blue bikes, 4 yellow bikes, and 6 green bikes in the bike rack. This is based on a system of equations derived from the information provided. Working through the equations accurately reflects the relationships between the different colored bikes.
;
Jawaban: 我Penjelasan: