A study of a population of 1,200 frogs revealed that
12 out of every 180 frogs in the population have
spots on their back. Based on the results of this
study, how many frogs in the population do NOT
have spots on their back?
A 80
B 168
C 1,280
D 1,120**
Yes, you're right.
180 - 12 = 168
so
(168/180) * 1200
yes, agree
1200
To find out how many frogs in the population do not have spots on their back, we need to subtract the number of frogs with spots from the total population.
In the given study, it is mentioned that 12 out of every 180 frogs have spots on their back. So, we can calculate the number of frogs with spots by dividing the total population (1,200) by the group size (180).
Number of frogs with spots = (total population) / (group size)
Number of frogs with spots = 1,200 / 180
Number of frogs with spots = 6.67
Since we are dealing with whole numbers, we can round this value down to 6. So, we can conclude that there are 6 frogs in the population with spots on their back.
To find the number of frogs without spots, we subtract the number of frogs with spots from the total population:
Number of frogs without spots = total population - number of frogs with spots
Number of frogs without spots = 1,200 - 6
Number of frogs without spots = 1,194
So, the correct answer is D) 1,194.