Question
In class ‘C’, the number of girls is 25% more than
that of boys while in class ‘D’ the number of girls is 40% more than that of boys. If the total number of students in class ‘C’ and ‘D’ is 360 and 420, respectively, then find the difference between the number of girls in classes ‘C’ and ‘D’.Solution
ATQ, Let the total number of boys in class ‘C’ = ‘10a’ Then, the total number of girls in class ‘C’ = 1.25 × 10a = ‘12.5a’ Let the total number of boys in class ‘D’ = ‘10b’ Then, the total number of girls in class ‘D’ = 1.40 × 10b = ‘14b’ According to the question, 10a + 12.5a = 360 Or, 22.5a = 360 Or, a = 360 / 22.5 = 16 And, 10b + 14b = 420 Or, 24b = 420 Or, b = 420 / 24 = 17.5 Required difference = 14b – 12.5a = 14 × 17.5 – 12.5 × 16 = 245 – 200 = 45
Select the option in which the numbers share the same relationship in set as that shared by the numbers in the given set. (Note: Operations should be ...
- Select the option that is related to the third letter cluster in the same way as second letter cluster is related to the first letter cluster.
TOPO... - Select the option that is related to the third number in the same way as the second number is related to the first number.
8 : 576 : 13 : ? Consider the following statements:
Assertion (A): The President of India is not the constitutional head of the State.
Reason (R): The Indi...
Select the option that is related to the third number in the same way as the second number is related to first number and the sixth number is related t...
Select the number combination of letters that when placed sequentially in the blanks of the given series will complete the series.
p o _ e _ f...
Choose the word which is different from the rest
Select the option in which the words share the same relationship as that shared by the given pair of words.
'Material' is related to 'Cotton' ...
In the following question, select the related number from the given alternatives.
16 : 256 :: 23 : ?
Select the option that is related to third letter cluster in the same way as second letter cluster is related to first letter cluster.
NIL: SNQ :: GAP: ?
Relevant for Exams:
