Advertisements
Advertisements
Question
After 18 years, Swarnim will be 4 times as old as he is now. His present age is ______.
Advertisements
Solution
After 18 years, Swarnim will be 4 times as old as he is now. His present age is 6 years.
Explanation:
Let Swarnim’s present age be x year.
After 18 year, Swarnim’s age = (x + 18) year
According to the question,
x + 18 = 4x
⇒ x – 4x = –18 ...[Transposing 4x to LHS and 18 to RHS]
⇒ –3x = –18
⇒ `(-3x)/(-3) = (-18)/3` ...[Dividing both sides by –3]
∴ x = 6
Hence, Swarnim’s present age is 6 year.
APPEARS IN
RELATED QUESTIONS
The sum of three consecutive multiples of 8 is 888. Find the multiples.
The number of boys and girls in a class are in the ratio 7:5. The number of boys is 8 more than the number of girls. What is the total class strength?
I have a total of Rs 300 in coins of denomination Re 1, Rs 2 and Rs 5. The number of Rs 2 coins is 3 times the number of Rs 5 coins. The total number of coins is 160. How many coins of each denomination are with me?
The difference between two whole numbers is 66. The ratio of the two numbers is 2: 5. What are the two numbers?
Arpita’s present age is thrice of Shilpa. If Shilpa’s age three years ago was x. Then Arpita’s present age is ______.
Shikha’s present age is p years. Reemu’s present age is 4 times the present age of Shikha. After 5 years Reemu’s age will be 15p years.
The sum of three consecutive odd natural numbers is 69. Find the prime number out of these numbers.
A man was engaged as typist for the month of February in 2009. He was paid Rs. 500 per day but Rs. 100 per day were deducted for the days he remained absent. He received Rs. 9,100 as salary for the month. For how many days did he work?
A steamer goes downstream and covers the distance between two ports in 5 hours while it covers the same distance upstream in 6 hours. If the speed of the stream is 1 km/hr, find the speed of the steamer in still water.
A carpenter charged Rs. 2500 for making a bed. The cost of materials used is Rs. 1100 and the labour charges are Rs. 200/hr. For how many hours did the carpenter work?
