Answer:
The total number of slices of pizza in 20 pizzas is 204 .
Step-by-step explanation:
Given as :
The total number of pizza ordered = 20 pizza
The number of slices for 45% of total pizza = 8
The number of slices for 55% of total pizza = 12
Let the total number of slices of pizza = n
Now, According to question
45% of total pizza = × 20
I.e 45% of total pizza =
∴, 45% of total pizza = 9
Again
55% of total pizza = Total pizza - 45% of total pizza
Or, 55% of total pizza = 20 - 9
∴ 55% of total pizza = 11
Now,
The total number of slices of pizza = 45% of total pizza × The number of slices for 45% of total pizza + 55% of total pizza × The number of slices for 55% of total pizza
i.e n = 9 × 8 + 11 × 12
or, n = 72 + 132
∴ n = 204
So, The total number of slices of pizza = n = 204
Hence,The total number of slices of pizza in 20 pizzas is 204 . Answer