Answer:
There are 64 cherries.
Explanation:
We are given the following in the question:
Total number of pieces of fruit = 280
Let
be the number of blueberries.
Number of raspberries =
![=2* \text{Number of blueberries}\\=2x](https://img.qammunity.org/2021/formulas/mathematics/high-school/ew8mja16h0qxs88oojd5agahbus9h32cbq.png)
Number of cherries =
![4* \text{Number of raspberries}\\=4* 2x\\ = 8x](https://img.qammunity.org/2021/formulas/mathematics/high-school/ngj6buthp6eqgjeynyodflsgd7uqbn9f1o.png)
Number of grapes =
![3* \text{Number of cherries}\\=3* 8x\\=24x](https://img.qammunity.org/2021/formulas/mathematics/high-school/7spveu0s6z6mqhkx03u6kxg4uw6nrl23zy.png)
Thus, we can write the equation:
![x + 2x + 8x + 24x = 280\\35x = 280\\x = 8](https://img.qammunity.org/2021/formulas/mathematics/high-school/9wl0ek9n3rro65xiuedu2rt97k26ihlcyb.png)
Number of cherries =
![8x = 8* 8 = 64](https://img.qammunity.org/2021/formulas/mathematics/high-school/zdluou9zaaiotofh4dli1vdvx80x8mgfah.png)
Thus, there are 64 cherries.