Question
Akhil and Nikhil together can complete a work in 15 days
while Nikhil alone takes 20 days to complete 50% of the work. If the efficiency of Sachin is 20% more than that of Akhil, then find the time taken by Sachin alone to complete the whole work.Solution
Time taken by Nikhil to complete the whole work alone = 20/0.50 = 40 days Let the total work = 120 units Efficiency of (Akhil + Nikhil) = 120/15 = 8 units/day Efficiency of Nikhil = 120/40 = 3 units/day Efficiency of Akhil = 8 - 3 = 5 units/day Therefore efficiency of Sachin = 1.20 x 5 = 6 units/day Time taken by Sachin to complete the whole work alone = 120/6 = 20 days
23 45 89 155 ? 353
580 557 528 497 ? 419
(14.073)² + (32.103)² + (43.9653)² + (52.983)² + ? = (102.45)² + (98.007)²
Complete the series choosing the missing number.
110, 99, 86, ___, 54, 35.
The question below is based on the given series I. The series I satisfy a certain pattern, follow the same pattern in series II and answer the questions...
What will come in place of the question mark (?) in the following series?
17, 81, 131, 169, 197, ?
226  231   466  ?  5606  28031    Â
10, 10, 15, 30, 75, ?
What will come in place of the question mark (?) in the following series?
72, 78, 90, ?, 132, 162
What will come in the place of questions (?) mark in the following questions.
1204, 1218, ? , 1267, 1302, 1344
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