Mathematics Questions and Answers

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Q21
Karnataka Express leaves Bangalore at 5 p.m. and reaches Dharmavaram at 9 p.m. Kurla Express leaves Dharmavaram at 7 p.m. and reaches Bangalore at 10.30 p.m. What time do the trains cross one another?
  • A 8.26 p.m.
  • B 8 p.m.
  • C 7.36 p.m.
  • D 7.56 p.m.
Answer: Option A
Q22
If the height of the cone is doubled then its volume is increased by-
  • A 100%
  • B 200%
  • C 300%
  • D 400%
Answer: Option A
Q23
The value of [log 3/5 +log 5/36 +log 12] is equa1 to -
  • A log 5
  • B log 3
  • C log 2
  • D log 0
Answer: Option D
Q24
Two years ago a man was 6 times as older as his son. In 18 years, he will be twice as Older as his son. Their present ages are-
  • A 32 years, 7 years
  • B 34 years, 9 years
  • C 36 years, 11 years
  • D none of these
Answer: Option A
Q25
A dishonest dealer sells his goods at the cost price and still earns a profit of 25% by under weighing. What weight does he use for a kg?
  • A 750 gms
  • B 800 gms
  • C 825 gms
  • D 850 gms
Answer: Option B
Q26
A Railway Refreshment Room of a station has provisions for 20 weeks for catering to 750 passenger’s daily average.. If at the end of 4 weeks daily average of passengers is increased by 450, how long will remaining provision last?
  • A 10 weeks
  • B 15 weeks
  • C 11 weeks
  • D 16 weeks
Answer: Option A
Q27
If a train runs at 40 kmph, it reaches its destination late by 11 minutes but if it runs at 50 kmph, it is late by 5 minutes only. The correct time for the train to complete its journey is-
  • A 13 min.
  • B 15 mm.
  • C 19 mm.
  • D 21 mm,
Answer: Option D
Q28
A merchant marks his goads at Rs. 300 and allows a discount of 25%. If he still gains 12.5% then the cost of article is-
  • A Rs. 220
  • B Rs. 240
  • C Rs. 200
  • D Rs. 260
Answer: Option C
Q29
If four examiners can examine a certain number of answer books in 8 days by working 5 hrs a day, for how many hours a day would 2 examiners have to work in order to examine twice the number of answer books in 28 days?
  • A 6. hours
  • B 7 ½ hours
  • C 8 hours
  • D 9 hours
Answer: Option A
Q30
Two men starting from the same place walk at the rate of 4 kmph and 4.5 kmph respectively What time will they take to be 8.5. km apart, if they walk in the same direction-
  • A 12 hrs
  • B 14 hrs; 15 mi
  • C 17 hrs.
  • D 12 hrs. 55 mm.
Answer: Option C
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