Question
A’ and ‘B’ alone can do a certain work in 20 days
and 30 days, respectively. Both started the work together but after ‘x’ days ‘A’ left the work and the rest work was completed by B alone in ‘2x’ days. Find the total time taken to complete the whole work in this way.Solution
Total work = 60 units (LCM of 20 and 30) Efficiency of ‘A’ = 60/20 = 3 units/day Efficiency of ‘B’ = 60/30 = 2 units/day According to the question, ‘A’ worked for ‘x’ days and ‘B’ worked for ‘2x days. Therefore, 3x + 2 × 2x = 120 Or 3x + 4x = 60 Or x = 60/7days total time taken to complete the whole work = 2×60/7=120/7days
I. Working in hazardous sites such as quarries, where explosives and heavy machinery are deployed, is fraught with risks.
II. But human casualtie...
Inference- Sports and empowerment of women
I. When girls exist on the margins of play, they learn that public spaces belong to men. You see th...
The Centre would reconsider its draft and limit its scope to just providing relief to women, (instead of creating a new regulative).
Federal policy on women's health research has evolved by fits and starts .
...Wealth creators are essential for money to distributed in the economy.
Antonym (Most opposite meaning) of the word CELESTIAL is
Select the correctly punctuated sentence from the options below.
The following question contains three statements, one or more of which may not be grammatically correct. You are required to identify the incorrect sta...
Select the correctly punctuated sentence from the options below.
(It is been seen) as a "prestige battle" for the PM and a litmus test for the president of the opposition party.
Relevant for Exams:
