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option 1 gives a percent but no total scoops.Not suff
option2 gives 120 scoops in total but how do we get the single and double scoops.Not suff
Taking both we get the double sccops as 60% of 120 is 72
I take C
hmm, u said taking both we get the double scoops as 60% of 120, but 60% is the number og guests served double scoops not the percentage of double scoops.
i don't seem to understand why 60%(of people) is being used with 120(number of scoops) to compute the number of guests who were served a double scoop of ice cream.
Does 60% of people mean 60% of 120 was served to them?
Thanks Kapslock. I didn't know it was okay to assmume the number of people.
I don't think it's ok to assume the number of pple. after all isn't DS about finding the sufficiency of the information given. As such if one has to assume then the information provided is clearly not sufficient.
At a certain picnic, each of the guest was served either a single scoop or a double scoop of ice cream. How many of the guests were served a double scoop of ice cream?
(1) At the picnic, 60 percent of the guests were served a double scoop of ice cream. (2) A total of 120 scoops of ice cream were served to all the guests at the picnic.
Explanation is very critical please. Thanks
Stmt 1 : Not suff as we don't know the total number of guests.
Stmt 2: Obviously not sufficient
1 & 2 together:
Let total number of guests = 100
from Stmt 1: 60 of them get double scoops ---> 60 * 2 = 120 scoops
So 40 of them shld get single scoops
Total scoops = 120 + 40 = 160
Therefore, now using Stmt 2, # of double scoops when total scoops is 120 = 120 /160 * 120 = 90
Thus, number of people getting double scoops = 90 /2 = 45