Question
A alone can complete 70% of a work in 21 days while B
takes 15 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 = 21/0.7 = 30 days Time taken by B alone to complete the entire work = 30 + 15 = 45 days Let the total work = L.C.M of 30, 45 and 20 = 180 units Then, efficiency of B = (180/45) = 4 units/day Combined efficiency of B and C = (180/20) = 9 units/day So, efficiency of C alone = 9 – 4 = 5 units/day So, time taken by C alone to complete the entire work = (180/5) = 36 days
What is the code for “hard”?
If ‘Hospital’ is called as ‘School’, ‘School’ is called as ‘Temple’, ‘Temple’ is called as ‘Market’, and ‘Market’ is called...
What is the code for ‘say may’ in the given code language?
- In a certain code language, ‘TABLE’ is coded as 14 and ‘CHAIR’ is coded as 10. How will ‘PLATE’ be coded in that language?
In a certain code language, HAIR is written as 72 and PALM is written as 66. What will be the code for THUMB in the same language?
In a certain code language, ‘CALCIUM’ is coded as ‘25’ and ‘FLOWER’ is coded as ‘53’. What is the code of word ‘MEMORIES’ in the sam...
In a certain language ’which have strong legs’, is written as ‘d@f15 s#y12’ h@q18 o@j12, then what does ‘modern house&rsqu...
- In a code language, ‘GARMENTS’ is written as ‘TYINCMGH’ and ‘INFALTION’ is written as ‘GMUYOGGMM’. How will ‘CONSTANT’ be written in th...
In a certain language,
'pl zs ls' means 'conspiracy was hatched',
'uq al bg' means 'would replace him'
'bg kr ls' means ‘him as h...
If ‘DOG’ = 78, then ‘BARK’ = (?)
