Final answer:
To find out how many chocolate ice creams are sold, subtract the percentages of vanilla and strawberry ice creams from 100%. 30% of the ice creams sold are chocolate, which totals to 30 chocolate ice creams.
Step-by-step explanation:
To find out how many chocolate ice creams are sold, we need to subtract the percentages of vanilla and strawberry ice creams from 100%.
Given that 40% of the ice creams sold are vanilla and 30% are strawberry, the percentage of chocolate ice creams can be found by subtracting the vanilla and strawberry percentages from 100%:
100% - 40% - 30% = 30%
Therefore, 30% of the ice creams sold are chocolate. To calculate the actual number of chocolate ice creams sold, we can multiply 30% by the total number of ice creams:
30% × 100 = 30
So, 30 chocolate ice creams are sold.