Question
P says to Q ‘’ I am thrice as old as you were when
I was as old as you are’’. The sum of their ages is 100 years. Find the difference of their ages?Solution
P says to Q ‘’ I am thrice as sold as you were when I was as old as you are’’ i.e P = 3[Q-(P-Q)] P = 3 [2Q-P] P = 6 Q – 3P 4P = 6 Q…………(i) P + Q = 100…………(ii) From (i) and (ii), we get P = 40 years and Q = 60 years Hence, difference of their ages = 60 – 40 = 20 years
Statements:
Only male are boy
Some male are man
At least some man are old
Conclusions:
I. Some boy being old is a...
Statements:
All Books are Flight.
Only a few Flight are Ticket.
No Ticket is a Memo.
Conclusions:
I. Some Fligh...
Statements: Some earth are moon.
                Some moon are sun.
Conclusions: I. Some earth are sun.
   ...
Statements : All roses are Daisy.
No Lilly is a rose.
No Daisy is a Tulip.
Conclusions : I . Â No Tulip is a Daisy.
<...Statements:
All Telegram are Office.
Some Letter are Office.
Some Mail are Letter.
No Letter is Posts.
Conclusions:
Statements:
All TVs are laptop.
Some laptops are computers.
All computers are keyboards.
Conclusions:
I. Some TV...
Statements:
Only a few clouds are floors.
All floors are roof.
Some roof are drops.
Only a few drops are procedures.
...
Statements:
Some years are months.
Some months are days.
Some days are weeks.
Conclusions:
I. No year is a da...
Statements: All books are notebooks.
Some notebooks are novels.
All n...
Statements:
Some schools are hospitals
Mostly hospitals are courts
Some courts are parlours
Conclusions:
I...
Relevant for Exams:
