Question
Number of girls in class ‘P’ is 60% of number of boys
in that class. Class ‘Q’ has 20% fewer boys than in class ‘P’ and 40% more total students than class ‘P’. Find the ratio of number of girls in class ‘P’ to that in class ‘Q’.Solution
ATQ,
Let the number of boys in class ‘P’ = 100x
Then, number of girls in class ‘P’ = 0.60 × 100x = 60x
Number of boys in class ‘Q’ = 0.80 × 100x = 80x
Total number of students in class ‘Q’ = (100x + 60x) × (140/100) = 224x
Number of girls in class ‘Q’ = 224x – 80x = 144x
Required ratio = (60x):(144x) = 5:12
Select the number from among the given option that can replace the question mark (?) in the following series.
11, 18, 30, 52, 94, ?
Select the number from among the given option that can replace the question mark (?) in the following series.
6, 31, 126, 381, 766, ?
M/14 : O/12 : : U/6 : ?
Select the related word/letters/number from the given alternatives.
LHX: OEA : : PFT : ?
Find the missing term in the following series:
43 44 ? 69 185
...Find the missing numbers.
/RRB_NTPC_MT_7_100...JPG)
What will come in the place of question mark?
In each of the following questions, select the related number from the given alternatives:
8/15 : 2/5 : : 16/21 : ?
Find the missing term in the given series:
4 3.5 ? 22.875 ...
Relevant for Exams:
