Question
P’s 2 days work is equal to Q’s 3 days work. If P
and Q together can complete the work in 30 days then how much time Q will take to complete 60% of the work?Solution
Ratio of efficiency of P and Q = 3:2 Let the efficiency of P and Q be 3x and 2x units per day respectively. Total work = 5x × 30 = 150x units Required time = (0.60 × 150x)/2x = 45 days
24, 42, 60, ?, 96, 114
What will come in place of (?) question mark in the given number series.
10, 17, 26, 37, 50, ?
660, 653, 639, 618, 590, ?
What will come in place of the question mark (?) in the following series?
75, 219, 388, ?, 809, 1065168, 178, ?, 273, 400, 618, 963
60   61    57   66    ?      75    39
...What will come in place of the question mark (?) in the following series?
2, 5, 14, 41, 122, 365, ?
81, 83, 87, 95, 111, ?
What will come in place of the question mark (?) in the following series?
400, 841, 1202, ?, 1716, 1885
64, 66, 69, 74, 81, ?
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