A man is 24 years older than his son. In two years, his age will be twice the age of his son. What is the present age of the son?
22 years
22 years is correct.
Let the son's present age be \(x\) years. Then the man's present age is \(x + 24\) years.
In two years the son will be \(x + 2\) and the man \(x + 26\), and the man's age will be twice the son's: \(x + 26 = 2(x + 2)\).
\(x + 26 = 2x + 4 \Rightarrow x = 22\).
Check: the son is 22 and the man 46 now; in two years they are 24 and 48, and 48 is twice 24. Hence, the son's present age is 22 years.
Which two signs should be interchanged to make the given equation correct?
306 ÷ 17 + 4 - 50 × 8 = 30
If + means -, ÷ means +, - means ×, and × means ÷ then, what is (80 ÷ 10 - 5) × 4 + 20?
If 'M' means subtraction, 'N' means division, 'O' means addition, and 'P' means multiplication, then which of the following expressions equals 48?
If + means -, ÷ means +, - means ×, and × means ÷ then, what is 20 ÷ 10 - 5 + 15?
If 4 @ 2 = 6 and 5 @ 3 = 8, what is 6 @ 4?
If 6 * 2 = 12 and 3 * 4 = 12, what is 5 * 3?
If
A # B = A² + B,
A @ B = A - B,
A * B = A + 2B,
then what is the value of:
5 # 3 @ 2 * 4?
If 1 = 1, 2 = 4, 3 = 9, then 4 = ?
If % = divided by,
@ = subtracted from,
$ = multiplied by,
& = added to
Then evaluate:
100 % 5 $ 2 @ 10 & 6 =?
In a centre code system using locality-sensitive hashing (LSH), if the similarity threshold is 0.8 and hash family has 20 functions, how many hash functions should be used for optimal performance?
At present, the ratio between the ages of Arun and Deepak is 4:3. After 6 years, Arun's age will be 26 years. What is the age of Deepak at present?
A man is engaged for planting trees for 10 hours. He plants 10 trees in an hour. He takes rest for 30 minutes after every hour. How many trees does he plant in 10 hours?
Select the number that will come in the place of the question mark (?), if ‘+’ and ‘-’ are interchanged and ‘x’ and ‘÷’ are interchanged.
11 × 8 ÷ 5 + 30 − 50 = ?
Which two signs should be interchanged to make the following equation correct?
139 + 40 ÷ 5 - 168 × 3 = 283
Which two numbers (not digits) should be interchanged to make the given equation correct?
15 + 5 × 8 - 72 ÷ 4 + 16 × 3 = 101