Question
The relationship between the quantity of refined oil and
mustard oil in Mixtures 'P,' 'Q,' and 'R' is described as 7:3, 1:1, and 3:2, respectively. If these mixtures, 'P,' 'Q,' and 'R,' are combined in the ratio of 2:2:3, then what is the proportion of refined oil in the final mixture, expressed as a percentage?Solution
ATQ, % of quantity of Refined oil in mixture ‘P’ = (7/10) × 100 = 70% % of quantity of Refined oil in mixture ‘Q’ = (1/2) × 100 = 50% % of quantity of Refined in mixture ‘R’ = (3/5) × 100 = 60% Hence required % will be = [{(70 × 2) + (50 × 2) + (60 × 3)} ÷ (2 + 2 + 3)] = 420 ÷ 7 = 60%
What will come in place of the question mark (?) in the following series?
77, 198, 342, 511, 707, ?
107    157    194    ?     237    247
...3    8    26    93    ?   1985   11940
...257, 399, 566, ?, 983, 1237Â
246, 102, 202, ?, 174, 158
9    14    38    129    ?   2705   16260
...155, 161, 173, 191, ?, 245
79Â Â Â Â Â 86Â Â Â Â Â Â 76 Â Â Â Â Â Â 89Â Â Â Â Â Â 73 Â Â Â Â Â Â ?
...- What will come in place of (?) in the given number series.
729, 243, 81, 27, ?, 3 135, 148, ?, 184, 207, 236
