Let the 2 digit number be yx
When 18 is added digits are reversed.
(10x+y)-(10y+x)=18
solving we get x-y=-2
There are so many possibilities of different values of x,y vix
(1,3),(2,4)(3,5),(4,6)(5,7),(6,8),(7,9)
But from the above possibilities, the condition satsfies is the number 24
2+4 = 6
=> 6*4 = 24
Total percentage of students from Maharashtra = 18%
Percentage of Mumbai students among 18% of Maharashtra students = 30%
Total percentage of students from Mumbai = 30% of 18 = (30*18)/100 = 5.4%
Shaktiman saw a criminal at a distance of 75m. When Shaktiman started chasing him the criminal also started running. If the ratio of Speeds of Shaktiman to Criminal is 8:7. Then much distance did Shaktiman run to catch the Criminal?
The present age of a brother is 7 years more than three times the age of his sister. Nine years hence, brother’s age will be 6 years more than twice the age of the sister. Find the present age of the brother.
Let the sister’s present age be ‘n’ years.
=> brother’s present age = (3n + 7) years
So, according to the question
(3n + 7 + 9) = 2 (n + 9) + 6
=> 3n + 16 = 3n + 24
=> n = 8
Hence, brother’s present age = (3n + 7) = 31 years