Question
A can do a piece of work in 21 days and B in 28 days. If
they together work on it for 5 days, then the fraction of the work that is left is :Solution
A = 21 days B = 28 days LCM of (A and B) = LCM of 21 and 28 = 84 units Efficiency of A = 4 units/day and B = 3 units/day Total = 4 + 3 = 7 units/day 5 days work of A and B is 7 × 5 = 35 units Remaining work = 84 - 35 = 49 units Rest work / total work = 49/84 Required Fraction = 49/84 = 7/12
In the question below some statements are given followed by three conclusions I, II and III. You have to take the given statements to be true even if t...
Statements: Some tigers are lions.
No lion is a leopard.
Some leopards are Fox.
Statements:
90% English is Hindi
None of Hindi is Commerce
Only a few Commerce is Science
Conclusions:
I) Some C...
Statements:
Some tablets are laptops.
All laptops are mobiles.
No mobile is a notepad.
Conclusion:
I. Some tablet...
Statements:
Some chalks are wires.
No wire is pole.
Some poles are irons .
Conclusions:
I. No pole is a wire.
...Statements:
All present are past
Some past are future
Only a few future is tense
Conclusions:
I. Some tense can ne...
Three Statements are given followed by four conclusions numbered 1, 2, 3,and 4. Assuming the statements to be true, even if they seem to be at variance...
Below are given statements followed by some conclusions. You have to take the given statements to be true even if they seem to be at variance math the c...
. Statements:
No Dell is Asus.
No Acer is Bosch.
Only a few Bosch are HP.
All Acer are Asus.
Conclusions:
<...Statements: No bold is a smart.
Some smarts are cowards.
Conclusions: I. Some bolds are not cowards.
II. Some smarts are not bold...
Relevant for Exams:
