In a school with 400 students, the average of the age of the boys is 16 years and that of the girls is 12 years. If the average age of the school is 14 years 9 months. Then the number of girls in the school is.
Let the number of Boys be ‘x’ Sum of ages of boys = x x 16 Sum of ages of girls = (400 - x ) x 12 According to question, x × 16 + (400 - x) × 12 = 400 × `14 (3/4)` 16x + 4800 - 12x = 400 × `59/4` 4x + 4800 = 5900 4x = 1100 x = 275 Number of girls = 400 - 275 = 125
Select the option that is related to the third number in the same way as the second number is related to the first number.
37 : 68 :: 24 : ?
‘Experimenter’ is related to ‘Lab’ in the same way as ‘Chef’ is related to ‘_________’.
KPUW : NMXT DQGJ : ?
If 45 @ 15 = 18' and 28 @ 28 =19', then 48 @ 30 = ?'. What will come in place of question mark?
Eye: Myopia:: Teeth:?
Which letter cluster will complete the given series?
LSKR, JOOT, HKSV, FGWX, DCAZ, ______
There are eight cars A, B, C, D, E, F, G and H. Each car has a different price. Price of C is more than that of A and D. Price of atleast two cars is l...
Select the related number from the given alternatives:
19 : ? :: 18 : 5833
Select the option that is related to the third letter-cluster in the same way as the second letter-cluster is related to the first letter-cluster.
<...Select the word-pair that best represents a similar relationship to the one expressed in the given pair of words.
(The words must be considere...
