Question
A alone can complete 50% of a work in 15 days while B
takes 10 days more than A to complete it. If B and C together can complete the work in 20 days, then find the time taken by C alone to complete the same work.Solution
Time taken by A alone to complete the entire work = 15/0.5 = 30 days Time taken by B alone to complete the entire work = 30 + 10 = 40 days Let the total work = L.C.M of 30, 40 and 20 = 120 units Then, efficiency of B = (120/40) = 3 units/day Combined efficiency of B and C = (120/20) = 6 units/day So, efficiency of C alone = 6 – 3 = 3 units/day So, time taken by C alone to complete the entire work = (120/3) = 40 days
Select the option in which the numbers are related in the same way as are the numbers in the given set.
(19, 165, 14)
Select the option that is related to the fifth number in the same way as the second number is related to first number and third number is related to f...
Select the option that is related to the fifth number in the same way as the second number is related to first number and the third number is related to...
Select the related word/letters/number from the given alternatives.
42 : 14 :: 32 : (?)
Select the related number from the given alternatives:
14 : ? :: 13 : 2198
- Select the option that is related to the third number in the same way as the second number is related to the first number.
25 : 105 :: 55 : ? - Select the option that is related to the third word in the same way as the second word is related to the first word.
Rigid: Flexible :: Transparent: ? Select the option that is related to the fifth term in the same way as the second term is related to the first term and the fourth term is related to th...
In the following number - pairs, the second number is obtained by applying certain mathematical operations to the first number. Select the set in which...
If 33 @ 16 = 15' and 41 @ 32 = 7', then 64 @ 33 = ?'. What will come in place of question mark?
Relevant for Exams:
