Question
The time taken by ‘A’ to complete a task is 6 days
more than the time taken by A and B together. If A is twice as efficient as B, find the time required by B to complete the work alone.Solution
ATQ,
Let the time taken by A and B together to complete the work be ‘n’ days. Time taken by A alone = (n + 6) days Time taken by B alone = 2 × (n + 6) days (since A is twice as efficient as B) Now, 1/(n + 6) + 1 / [2(n + 6)] = 1/n ⇒ 3 / [2(n + 6)] = 1/n ⇒ 3n = 2n + 12 ⇒ n = 12 Therefore, time taken by B alone = 2 × (12 + 6) = 2 × 18 = 36 days
In a certain code, ‘LEMON’ is coded as ‘IAIII’ and ‘CLERK’ is coded as ‘AIAOI’, then what will PRIME be ...
I n a coded language ‘Country Cities States Towns’ is written as ‘fv, sd, qa, rt’ and ‘Country District States Capital’ is written as ‘gh,...
WOSUPA
In a certain code language, 'YEAR' is coded as ‘ZFBS' and ' LOOP' is coded as ' MPPQ'. How will 'MEDIA' be coded in that language?
What does the code “%G18 %B19 #O16” stand for?
If ‘Shame lame tame pave fame is’ is written as 439516; ‘Shame tame lame fame life’ is 04396 and ‘Pave is pure’ is 857, which digit represen...
In the following question, find which one word cannot be made from the letters of the given word “CONSTITUTIONAL”
If all the vowels in the word ‘GRATEFUL’ are changed to the next letter in the English alphabetical order and all the consonants remain the same the...
- In a certain code language, "WINDOW" is written as "DLWMRD", and "GARDEN" is written as "MVWIZT". How will "SUMMER" be written in that language?
In a certain code language, "some bats are" is written as "dev naw nbd", " bats are balls" is written as "dev uaz nbd" and "balls bats over" is written ...
Relevant for Exams:
