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16 Oct 2017, 04:17
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A
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
19% (01:18) correct
81%
(01:20)
wrong
based on 128
sessions
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If there are only girl students in a class, is the number of students in the class less than 100?
(1) 49% of girls are above 15 years of age.
(2) 51 students are equal to or less than 15 years of age.
(1) 49% of girls are above 15 years of age.
(2) 51 students are equal to or less than 15 years of age.
18 Oct 2017, 04:25
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chetan2u
Hi..
Remember we are dealing with INTEGERS only as students, girl, boy etc have to be complete integer
let's see the choices:-
(1) 49% of girls are above 15 years of age.
this means that the number of girls above > 15 years has to be 49 or a multiple of 49..
also \(\frac{49}{100}*g\) will be an integer..
so g has to be min 100 or a multiple of 100
answer for " is the number of students in the class less than 100" is NO
sufficient
(2) 51 students are equal to or less than 15 years of age
from this we cannot say about total..
Insufficient
A
General Discussion
16 Oct 2017, 04:54
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We need to discover whether number of girls is more than 100.
(1) this statement give us % age breakdown, however no info about absolute values. Insufficient.
(2) No information about other age categories. Insufficient.
(1)+(2)
51% of Total number = 51 girls equal or less 15 y.o., hence total number is 100.
Answer C.
(1) this statement give us % age breakdown, however no info about absolute values. Insufficient.
(2) No information about other age categories. Insufficient.
(1)+(2)
51% of Total number = 51 girls equal or less 15 y.o., hence total number is 100.
Answer C.
