Question
Working together, A and B can do a certain work in 45
days. They work together for 10 days. They complete the remaining work in 28 days with the assistance of C. The work done by C in 3 days is equal to the work done by Bin 2 days. A and C together can complete 70% of the original work inSolution
Let 'a', 'b' and 'c' is the working efficiency of A, B and C respectively. Let the total amount of work required = 90 units The time is taken by A and B to do a certain work = 45 days Therefore, The combined efficiency of A and B 90/ 45 = 2-unit a per day a + b = 2 The amount of work done by A and B in 10 days = 20 units the remaining work = 90-20 = 70 units The amount of work done A and B in the last 28 days [with C] = 56 units The amount of work done by C in 28 days = 70 - 56 = 14 units Therefore, The Efficiency of C =14/28 =1/2 Now, since the work done by C in 3 days is equal to the work done by B in 2 days, The amount of work done by C in 3 days = 3c units The amount of work done by C in 2 days = 2b units So, 3c =2b b =3c/2 =3/2×1/2 b=3/4. The efficiency of A =2-3/4 =5/4 Combined efficiency of A and C =1/2 +5/4 =7/4 The 70% of total work =90×70/100 =63. Taken time by A =63/ (7/4) = (63×4)/7 =252/7 =36days.
Look at the shorter term, (A)/the interbank market rates (B)/suggest that the cycle will (C)/turn up again early next year (D).
A new paradim is needed, in which bulk waste generators take the lead and city managers show demonstrable change in the way it is processed.
...I will try to be on time (a) / but don’t worry when (b) / I am late. (c) / No error (d)
In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and select the appropriate opti...
He deliberated thoughtfully (1) long and hard (2) , consulting his assistant to heighten (3) the drama, but as professional fouls (4) go it was as clear...
India paid the price for not including a third pacer in Akash Deep, who sitting out to accommodate a three-man spin attack .
Directions: In each of the questions, a sentence has been divided into four parts, one of which may contain an error. Identify that fragment and mark i...
In the sentences, there is an error. Pick the option containing error as the answer.
P. We lived in very small groups, about 50 people, groups...
"This question consists of a sentence which is divided into four parts numbered (1) to 4. only one part of the sentence is not acceptable in standard w...
Given below are sentences with an error in each. The error is in one part of the sentence. Below each sentence are given the options containing the par...
Relevant for Exams:
