Question
P, Q, R can do a piece of work in 40 days, 90 days, and
36 days, respectively. P started the work. Q joined him after 7 days. If R joined them after 8 days from the beginning, then for how many days did R work?Solution
LCM (40, 90, 36) = 360 Let the total work be the LCM of the time taken individually by the workers. Efficiencies, P does each day = 360 40 = 9 units Q does each day = 360 90 = 4 units R does each day = 360 36 = 10 units Let the total work be completed in K days. According to the question, 9 x K + 4 x (K-7) + 10 x (K - 8) = 360 23K= 468 K = 468/23 (K-8) =284/23 (K - 8) = 12(8/23) 
Select the most appropriate meaning of the bold idiom in the given sentence. Pradeep was so tired that he hit the sack as soon as possible.
...In each of the following questions, an idiomatic expression/a proverb has been highlighted– followed by four alternatives. Choose the one which best ...
"After the scandal, the politician was walking on thin ice with the voters."
Choose the correct replacement for the bold phrase.
Despite facing strong criticism, the minister refused to give away his position on the cont...
Hang in there
Directions : Which of the following phrases (I), (II) and (III) given below the sentence should replace the emboldened phrase to make the sentence gram...
His promotion is on the cards.
...After weeks of practice, the team was finally able to get their act together before the big game.
In the question below, a sentence is given with a part missing. From the options below, choose the correct combination of idioms that can fit in the bl...
Select the idiom/phrase that most accurately and contextually replaces the bolded segment.
The CEO deliberately avoided addressing the core f...
Relevant for Exams:
