Question
A sum of Rs. 178 needs to be divided among 60 students
in a class, where each boy receives Rs. 2.5 and each girl receives Rs. 3.5. Determine the ratio of boys to girls in the class.Solution
Let number of boys is x Number of girls in the class = 60 – x According to question; 2.5x + 3.5 × (60 – x) = 178 2.5x + 210 – 3.5x = 178 Or, x = 32 Desired Ratio = 32:(60 – 32) = 32:28 = 8:7 Hence, option b.
35 36 68 207 836 4205
...6 3.5 2.5 ? 8.5 23.75
...16, 54, 128, ‘?’, 432,686
7   24    43    66   ?      126
35    57    101    189    ?     717
130 114 106 102 100 ?
43Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 44Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 48Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ...
If  2  4  6  x  14  28  30
Then, x³+ 2 x+1 = ?
17 ? 33 44 57 72
...35Â Â Â Â Â Â Â Â Â Â 36Â Â Â Â Â Â Â Â Â Â 40Â Â Â Â Â Â Â Â Â Â 49Â Â Â Â Â Â Â Â Â Â 65Â Â Â Â Â Â Â Â Â Â ?
...
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