Question
If the efficiency ratio of A, B, and C is 7:9:11, and B and
C together can finish a task in 10 days, then how much time will A and B need to complete it?Solution
ATQ,
Let efficiencies of A, B, and C be 7x, 9x, and 11x units/day respectively.
Total work = (9x + 11x) × 10 = 200x units
Required time = 200x ÷ (7x + 9x) = 200x ÷ 16x = 12.5 days
More Time and work Questions
If 152,   242,    x ,  332,   404,    314,
then find the value of (2x – 1)?
...3 5 7 25 85 481
...60  61  126  387  ?   7845
2556   636    156    ?    6
9Â Â Â 4.5Â Â Â 4.5Â Â Â 9Â Â Â 36Â Â Â ?
14 20 35 ? 433 2167
...63 189 315 378 567 693
...11Â Â Â 46Â Â Â 109Â Â Â 208Â Â Â Â 351Â Â Â Â ?
12 11 18 34 89.5 259.5
...Choose the correct alternative
21: 3 ∷ 574: ?
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