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A father is three times as old as his son. After fifteen years the father will be twice as old as his son's age at that time. Hence the father's present age is?
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Most Upvoted Answer
A father is three times as old as his son. After fifteen years the fat...
Problem Statement:
A father is three times as old as his son. After fifteen years the father will be twice as old as his son's age at that time. Hence the father's present age is?

Solution:
Let the present age of the son be x.
Then the present age of the father will be 3x.

After fifteen years, the age of the son will be x+15 and the age of the father will be 3x+15.

According to the problem statement, after fifteen years the father will be twice as old as his son's age at that time. Hence we can write the following equation:

3x+15 = 2(x+15)

Solving the above equation, we get:

3x+15 = 2x+30
x = 15

Therefore, the present age of the son is 15 years.

The present age of the father can be found by substituting x=15 in the equation 3x, which gives:

Present age of the father = 3x = 3(15) = 45 years.

Hence, the father's present age is 45 years.

Answer:
The father's present age is 45 years.
Community Answer
A father is three times as old as his son. After fifteen years the fat...
Before 15 years
F = 3S
after 15 years
F + 15
S + 15

F = 2S
F + 15 = 2 (S + 15) we know that F= 3S
3S + 15 = 2 (S + 15)
3S - 2S = 30 - 15
S= 15 this is the son age
F = 3S = 3(15)
F = 45
so, the father's present age is 45.
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Directions: Read the given passage carefully and answer the question as follow:It is one of the disadvantages of reading books about natural scenic wonders that they fill the mind with pictures, often exaggerated, often distorted, often blurred, and, even when well drawn, injurious to the freshness of first impressions. Such has been the fate of most of us with regard to the Falls of Niagara. There was little accuracy in the estimates of the first observers of the cataract. Startled by an exhibition of power so novel and so grand, emotion leaped beyond the control of the judgment, and gave currency to notions which have often led to disappointment.In the winter of 1678 and 1679 the cataract was visited by Father Hennepin, and described in a book dedicated to the King of Great Britain. He gives a drawing of the waterfall, which shows that serious changes have taken place since his time. He describes it as ‘a great and prodigious cadence of water, to which the universe does not offer a parallel.’ The height of the fall, according to Hennepin, was more than 600 feet. ‘The waters,’ he says, ‘which fall from this great precipice do foam and boil in the most astonishing manner, making a noise more terrible than that of thunder. When the wind blows to the south its frightful roaring may be heard for more than fifteen leagues.’ The Baron la Hontan, who visited Niagara in 1687, makes the height 800 feet. In 1721 Charlevois, in a letter to Madame de Maintenon, after referring to the exaggerations of his predecessors, thus states the result of his own observations: ‘For my part, after examining it on all sides, I am inclined to think that we cannot allow it less than 140 or 150 feet,’—a remarkably close estimate.As regards the noise of the fall, Charlevois declares the accounts of his predecessors, which, I may say, are repeated to the present hour, to be altogether extravagant. He is perfectly right. The thunders of Niagara are formidable enough to those who really seek them at the base of the Horseshoe Fall; but on the banks of the river, and particularly above the fall, its silence, rather than its noise, is surprising. This arises, in part, from the lack of resonance; the surrounding country being flat, and therefore furnishing no echoing surfaces to reinforce the shock of the water.Q.According to the information in the passage, each of the following is trueEXCEPT

Directions: Read the given passage carefully and answer the question as follow:It is one of the disadvantages of reading books about natural scenic wonders that they fill the mind with pictures, often exaggerated, often distorted, often blurred, and, even when well drawn, injurious to the freshness of first impressions. Such has been the fate of most of us with regard to the Falls of Niagara. There was little accuracy in the estimates of the first observers of the cataract. Startled by an exhibition of power so novel and so grand, emotion leaped beyond the control of the judgment, and gave currency to notions which have often led to disappointment.In the winter of 1678 and 1679 the cataract was visited by Father Hennepin, and described in a book dedicated to the King of Great Britain. He gives a drawing of the waterfall, which shows that serious changes have taken place since his time. He describes it as ‘a great and prodigious cadence of water, to which the universe does not offer a parallel.’ The height of the fall, according to Hennepin, was more than 600 feet. ‘The waters,’ he says, ‘which fall from this great precipice do foam and boil in the most astonishing manner, making a noise more terrible than that of thunder. When the wind blows to the south its frightful roaring may be heard for more than fifteen leagues.’ The Baron la Hontan, who visited Niagara in 1687, makes the height 800 feet. In 1721 Charlevois, in a letter to Madame de Maintenon, after referring to the exaggerations of his predecessors, thus states the result of his own observations: ‘For my part, after examining it on all sides, I am inclined to think that we cannot allow it less than 140 or 150 feet,’—a remarkably close estimate.As regards the noise of the fall, Charlevois declares the accounts of his predecessors, which, I may say, are repeated to the present hour, to be altogether extravagant. He is perfectly right. The thunders of Niagara are formidable enough to those who really seek them at the base of the Horseshoe Fall; but on the banks of the river, and particularly above the fall, its silence, rather than its noise, is surprising. This arises, in part, from the lack of resonance; the surrounding country being flat, and therefore furnishing no echoing surfaces to reinforce the shock of the water.Q.Which of the following statements can beinferred from the passage about the height of the Niagara Falls?

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A father is three times as old as his son. After fifteen years the father will be twice as old as his son's age at that time. Hence the father's present age is?
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