# Word Problems

Subject: Mental Ability    Exam: NTSE

Chapter Rating: Do If You Have Time

Topic Weightage: 0.03

## Important Concepts in Word Problems

Find notes, videos, important points and questions to practice on each of these concepts.

• Age Related Problems

• Number Related Problems

• Profit and Loss

• Ratio and Proportion

• Pipes and Cisterns

• Time Work and Distance

• Trains Related Problems

• Boats and Streams

• Alligation or Mixtures

• Miscellaneous

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## Important Points

Speed = Distance/Time, Distance = Speed x Time
Any two digit number with digits x and y will be written as 10x+y in an expression
Gain = SP - CP, Loss = CP-SP
Gain % = (Gain x 100)/CP, Loss % = (Loss x 100)/CP
SP (Gain) =((100 + Gain %) x CP)/100, SP (Loss) = ((100 - Loss %) x CP)/100

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