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- Question
- The ages of A and B are in the ratio of 11 : 13 respectively. After 7 years the ratio of their ages will be 20 : 23. What is the difference in years between their ages?
Options- A. 4 years
- B. 5 years
- C. 6 years
- D. 7 years
- Correct Answer
- 6 years
ExplanationLet the present ages of A and B are 11x and 13x years respectively; then
According to question,
After 7 years the ratio of their ages will be 20 : 23.
(11x + 7 ) / (13x + 7) = 20/23
? (11x + 7 ) 23 = 20 (13x + 7)
? 253x + 161 = 260x + 140
? 7x = 21
? x = 3
Hence, difference of their ages = 13x - 11x = 2x = 2 x 3 = 6 years - 1. A tree always has which of the following_______
Options- A. Shadow
- B. Leaves
- C. Branches
- D. Roots Discuss
- 2. A scenery always has ________
Options- A. Rivers
- B. Mountains
- C. Paints
- D. Composition Discuss
- 3. Some mangoes are yellow. Some tixo are mangoes. Conclusions: (i) Some mangoes are green. (ii) Tixo is a yellow.
Options- A. Only conclusion (i) follows
- B. Only conclusion (ii) follows
- C. Either (i) or (ii) follows
- D. Neither (i) nor (ii) follows Discuss
- 4. 1.Water boils at 100 degree C 2.Water freezes at 0 degree C Conclusion: At low pressure ,water boils at lower temperature The conclusion drawn is
Options- A. True
- B. false
- C. either probably true or probably false
- D. Irrelavent Discuss
- 5. Atmosphere always has
Options- A. Oxyen
- B. Air
- C. Moisture
- D. Dust Discuss
- 6. Hydrogen is lighter than Hydrogen .Hydrogen is lighter than helium.Therefore,Oxygen is the heaviest of the three gases
Options- A. False
- B. Probably false
- C. True
- D. Can't say Discuss
- 7. The presence ofcalcium in milk makes it white.Rice,too,is white.Therefore rice also contains calcium
Options- A. False
- B. Probably true
- C. True
- D. Can't say Discuss
- 8. 1.Oxygen is a gas 2.This cylinder contains gas Conclusion: This cylinder contains Oxygen The conclusion drawn is
Options- A. True
- B. Probably true
- C. False
- D. Irrelavent Discuss
- 9. Which of the following is always associated with justice?
Options- A. Hypocrisy
- B. Magnanimity
- C. Legitimacy
- D. Diminutiveness Discuss
- 10. A child must have had
Options- A. Toys
- B. Friends
- C. Parents
- D. Education Discuss
More questions
Correct Answer: Roots
Correct Answer: Composition
Correct Answer: Neither (i) nor (ii) follows
Correct Answer: Irrelavent
Explanation:
It is irrelavent
Correct Answer: Air
Explanation:
Clearly, though all the alternatives may form a part of the atmosphere, the air is the most vital part, without which there can be no atmosphere. So, the answer is (b).
Correct Answer: Can't say
Correct Answer: Can't say
Correct Answer: True
Explanation:
It is true
Correct Answer: Legitimacy
Correct Answer: Parents
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