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Important Formulas
Vedic/Quicker Math
Alligation or Mixture
Area
Average
Banker's Discount
Boats and Streams
Calendar
Chain Rule
Clock
Compound Interest
Decimal Fraction
Height and Distance
Logarithm
Numbers
Odd Man Out and Series
Partnership
Percentage
Permutation & Combination
Pipes and Cistern
Probability
Problems on Ages
Problems on H.C.F & L.C.M
Problems on Numbers
Problems on Trains
Profit & Loss
Races and Games
Ratio and Proportion
Simple Interest
Simplification
Square Root and Cube Root
Stocks and Shares
Surds and Indices
Time and Distance
True Discount
Volume and Surface Area
Practice Questions
Note: You can add tough questions into your favourite list for second revision. 
A and B can do a work in 8 days, 13, and C can do the same work in 12 days. A, B and C together can finish it in 6 days. A and C together will do it in :  
A.  4 days [Wrong Answer] 
B.  6 days [Wrong Answer] 
C.  8 days [Correct Answer] 
D.  12 days [Wrong Answer] 
View Answer
Explanation:
Answer : C Discuss it below :(A + B + C)'s 1 day's work = Click here for more comments 
A can do a certain workin the same time in which B and C together can do it. If A and B together could do it in 10 days and C alone in 50 days, then B alone could do it in :  
A.  15 days [Wrong Answer] 
B.  20 days [Wrong Answer] 
C.  25 days [Correct Answer] 
D.  30 days [Wrong Answer] 
View Answer
Explanation:
Answer : C Discuss it below :(A + B)'s 1 day's work = From (i) and (ii), we get : 2 x (A's 1 day's work) = Click here for more comments 
A and B can complete a work in 15 days and 10 days respectively. They started doing the work together but after 2 days B had to leave and A alone completed the remaining work. The whole work was completed in  
A.  8 days [Wrong Answer] 
B.  10 days [Wrong Answer] 
C.  12 days [Correct Answer] 
D.  15 days [Wrong Answer] 
View Answer
Explanation:
Answer : C Discuss it below :(A.+ B)'s 1 day's work = Now, Click here for more comments 
A and B can do a piece of work in 72 days; B and C can do it in 120 days; A and C can do it in 90 days. In what time can A alone do it ?  
A.  80 days [Wrong Answer] 
B.  100 days [Wrong Answer] 
C.  120 days [Correct Answer] 
D.  150 days [Wrong Answer] 
View Answer
Explanation:
Answer : C Discuss it below :(A + B)'s 1 day's work = ^{72} ^{120} ^{90} = Click here for more comments 
Twenty women can do a work in sixteen days. Sixteen men can complete the same work in fifteen days. What is the ratio between the capacity of a man and a woman ?  
A.  3 : 4 [Wrong Answer] 
B.  4 : 3 [Correct Answer] 
C.  5 : 3 [Wrong Answer] 
D.  Data inadequate [Wrong Answer] 
View Answer

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