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- Question
- A dog starts chasing to a cat 2 hours later. It takes 2 hours to dog to catch the cat. If the speed of the dog is 30 Km/h. What is the speed of the cat?
Options- A. 10 km/h
- B. 15 km/h
- C. 20 km/h
- D. can't be determined
- Correct Answer
- 15 km/h
ExplanationTime = Distance advanced / Relative speed
2 = 2x / (30 - x)
? x = 15 km/h - 1. If sin ? + sin 5? = sin 3? and 0 < ? < (?/2), then what is the value of ? (in degrees)?
Options- A. 30
- B. 45
- C. 60
- D. 75 Discuss
- 2. If A/3 = B/2 = C/5, then what is the value of ratio (C + A)2 : (A + B)2 : (B + C)2?
Options- A. 9 : 4 : 25
- B. 25 : 4 : 9
- C. 64 : 25 : 49
- D. 49 : 25 : 64 Discuss
- 3. If a+b=2c then the value of aa-c+cb-c is equal to (where a?b?c )
Options- A. -1
- B. 1
- C. 0
- D. 1/2 Discuss
- 4. If x+1x=5, then the value of x1+x+x2 is
Options- A. 1/5
- B. 1/6
- C. 5
- D. 6 Discuss
- 5. If sin? + cos? = 1, then the sin? cos? is equal to
Options- A. 0
- B. 1
- C. 1/2
- D. -1/2 Discuss
- 6. If a2b+c=b2c+a=c2a+b=1 then the value of 21+a+21+b+21+c
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
- 7. If 2x+2x=3, then the value of x3+1x3+2 is
Options- A. 3/4
- B. 4/5
- C. 5/8
- D. 7/8 Discuss
- 8. In ?ABC if the median AD=1/2 BC, then ?BAC is
Options- A. 90°
- B. 45°
- C. 60°
- D. 75° Discuss
- 9. If sin?+cos?sin?-cos?=3, then the value of sin4?-cos4? is
Options- A. 4/3
- B. 3/4
- C. 5/3
- D. 3/5 Discuss
- 10. If (x2/yz) + (y2/zx) + (z2/xy) = 3 , then what is the value of (x + y + z)3 ?
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
More questions
Correct Answer: 30
Correct Answer: 64 : 25 : 49
Correct Answer: 1
Correct Answer: 1/6
Correct Answer: 0
Correct Answer: 2
Correct Answer: 7/8
Correct Answer: 90°
Correct Answer: 3/5
Correct Answer: 0
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