Advertisements
Advertisements
प्रश्न
After 12 years, Kanwar shall be 3 times as old as he was 4 years ago. Find his present age.
उत्तर
Let Kanwar’s present age be = x years
So, 4 years ago his age would be = x – 4 years
After 12 years his age would be = 12 + x years
According to the question,
12 + x = 3(x – 4)
12 + x = 3x – 12
x – 3x = –12 – 12
–2x = –24
x = 12
Hence, the present age of Kanwar’s is 12 years.
APPEARS IN
संबंधित प्रश्न
Sum of the digits of a two digit number is 9. When we interchange the digits it is found that the resulting new number is greater than the original number by 27. What is the two-digit number?
One of the two digits of a two digit number is three times the other digit. If you interchange the digit of this two-digit number and add the resulting number to the original number, you get 88. What is the original number?
Shobo’s mother’s present age is six times Shobo’s present age. Shobo’s age five years from now will be one third of this mother’s present age. What are their present ages?
There is a narrow rectangular plot, reserved for a school, in Mahuli village. The length and breadth of the plot are in the ratio 11:4. At the rate Rs 100 per metre it will cost the village panchayat Rs 75, 000 to fence the plot. What are the dimensions of the plot?
Half of a herd of deer are grazing in the field and three fourths of the remaining are playing nearby. The rest 9 are drinking water from the pond. Find the number of deer in the herd.
Arjun is twice as old as Shriya. Five years ago his age was three times Shriya’s age. Find their present ages.
In a 2 digit number, the units place digit is x. If the sum of digits be 9, then the number is (10x – 9).
A and B are together 90 years old. Five years ago A was thrice as old as B was. Hence, the ages of A and B five years back would be (x – 5) years and (85 – x) years respectively.
Sum of the digits of a two-digit number is 11. The given number is less than the number obtained by interchanging the digits by 9. Find the number.
In a two-digit number, digit in units place is twice the digit in tens place. If 27 is added to it, digits are reversed. Find the number.
