Read more Cheptor
MCQ's Search Engine
Important Formulas
Vedic/Quicker Math
Alligation or Mixture
Area
Average
Banker's Discount
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
Time and Work
True Discount
Volume and Surface Area
Practice Questions
Note:- You can add tough questions into your favourite list for second revision. |
A boat takes 90 minutes less to travel 36 miles downstream than to travel the same distance upstream. If the speed of the boat in still water is 10 mph, the speed of the stream is : | |
A. | 2 mph [Correct Answer] |
B. | 2.5 mph [Wrong Answer] |
C. | 3 mph [Wrong Answer] |
D. | 4 mph [Wrong Answer] |