Answer:
10 sundaes will be vanilla.
Explanation:
Given:
Fernando is making 30 sundaes with mint, chocolate,and vanilla ice cream.
1/3 of the Sunday's are mint ice-cream.
And 1/2 of the remaining sundaes are chocolate.
The rest are vanilla.
Now, to find the number of sundaes that will be vanilla.
Fernando is making sundaes total = 30.
So, the quantity of sundaes that are mint ice-cream:
![(1)/(3) \ of\ 30\\\\=(1)/(3) * 30\\\\=10.](https://img.qammunity.org/2021/formulas/mathematics/high-school/jyrlqcumxea81xs2h425cewq5mq22duejb.png)
Thus, 10 sundaes are mint ice-cream.
So, the remaining sundaes are:
![30-10=20.](https://img.qammunity.org/2021/formulas/mathematics/high-school/85gm4tjlb6evcfvwh6ayflb6cgape07wzp.png)
Thus, the remaining sundaes are = 20.
Now, to get the quantity of chocolate sundaes of the remaining sundaes:
![(1)/(2) \ of\ 20\\\\=(1)/(2) * 20\\\\=10.](https://img.qammunity.org/2021/formulas/mathematics/high-school/u549tvzyqes5x8kp2bcpn3zaselwh9fwtb.png)
Hence, 10 sundaes are chocolate of the remaining 20 sundaes.
As, given the rest are vanilla.
Now, to get the vanilla sundaes we subtract the 10 chocolate ice-cream from the 20 remaining sundaes:
![20-10=10.](https://img.qammunity.org/2021/formulas/mathematics/high-school/2c1n76paxhd6v9hff8r7eo4hj7flvgt0ri.png)
Therefore, 10 sundaes will be vanilla.