Question
A was travelling from point X to point Y. He increased
his speed by 10 km/h after every hour. He reached his destination in 20 hours. If his initial speed was 25 km/h, then what was his average speed in the whole journey?Solution
Total distance travelled by A = (20/2) × {2 × 25 + (20 – 1) × 10} = 10 × (50 + 190) = 2400 km Required average speed = 2400/20 = 120 km/h
In the question below there are three statements followed by two conclusions I and II. You have to take the three given statements to be true even if t...
Read the following statements and conclusions carefully. Assuming the information given in the statements is true, even if it appears to be at variance...
In the questions given below there are four statements followed by three conclusions I, II and III. You have to take the four given statements to be tr...
Statements:
Some children are parents.
All parents are infants.
Some infants are adolescent.
Conclusions:
I. At least...
Statements:
Only a few Cups are Spoons
All Spoons are Forks
Some Forks are Plates
Conclusion:
I. Some Cups are F...
Statements : All doors are chairs.
Some chairs are glass.
Some glasses are not tables.
Conclusions : I. No glass is a ta...
Statement:
Only car are bus.
No bus is train.
Only bike are train.
Conclusion:
I. No train is car.
II. S...
Statements:
All pinks are blacks
Only a few blacks are greens
Some greens are not whites
Only a few whites are orange
...Statements: All glasses are plates.
Some plates are bowls.
Conclusions:I. Some bowls are glasses.
II. No bowl is a glass.
Statements:
90% English is Hindi
None of Hindi is Commerce
Only a few Commerce is Science
Conclusions:
I) Some C...
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