Question
Leela and Laila, working together, can complete a task
in 18 days. Given that Laila is 125% more efficient than Leela, how long would it take for Laila to finish the task by herself?Solution
Let the efficiency of Leela alone = 4 units/day Then, efficiency of Laila alone = 4 + 4 X 1.25 = 9 units/day So, total work = (4 + 9) X 18 = 234 units And so, time taken by Laila alone to complete the work = 234 ÷ 9 = 26 days Hence, option a.
Select the number from among the given options that can replace the question mark (?) in the following series. 543, 518, 495, 474, 455, ?
Which two numbers should be interchanged to make the following equation equal?Â
16 + 8 × 24 ÷ 4 – 26 = 30
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'money has power...
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Which answer figure will complete the pattern in the question figure? (rotation is not allowed)
If 'A' stands for '÷ ', 'B' stands for '×', 'C' stands for + and 'D' stands for '–', what will come in place of the question
mark (?) in the ...
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<...
CALANDER is coded in a code as CLANAEDR. Find the code for CIRCULAR under the same rule.
Select the number from among the given options that can replace the question mark (?) in the following series.
3, 17, 73, 297, ? , 4777
...
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