Question
The speed of a car is 30% more than that of a bike. Both
of them start from a same point. After travelling for 4 hours, the speed of the bike is increased by 40%. After 6 hours from starting, the car was 52 km ahead of the bike. Find the initial speed of the bike.Solution
Let the initial speed of the bike be x km/hr Therefore, speed of the car = 1.30x km/hr According to the question, 6 × 1.30x - (4x + 2 ×1.40x) = 52 => 7.8x - 6.8x = 52 => x = 52/1 = 52 km/hr
The ratio of the present ages of Ginni and Binni is 8:3 respectively. Ginni is ‘n’ years older than Binni. If after 4 years, the ratio of the ages o...
In a family a couple has a son and a daughter. The age of the father is four times that of his son and age of her daughter is half of her mother. The wi...
B is 5 years older than A and A is 7 years older than C. If the sum of the age of A and C is 21 years, then find the sum of the ages of all three.
- Two years ago, the age ratio of 'D' and 'E' was 7:9. In ten years from now, their age ratio will be 9:11. Find the present age of 'K', who is 3 years young...
The total age of A, B and C seven years hence will be 90 years. Find the age of C six years hence, if the present age of A and B is 39 years and 25 year...
Present average age of A, B, and C is 30 years. If 5 years ago, the average age of A and C was 25 years, then find the present age of B.
The present age ratio of X and Y is 4:5. Also, the ratio of X’s age 7 years ago and Y’s age 6 years later is 1:2. Find their total current age.
The current average age of three friends, Aravi, Bipasa, and Chinu, is 24 years. The ratio of Chinu's and Diksha's present ages is 4:5, and Bipasa's cur...
Present age of ‘M’ is 25% more than that of ‘N’. 5 years ago, ‘M’ was 1.5 times as old as ‘N’. Find the present age of ‘N’.
...The ratio of difference between the present age of A and B to the present age of B and C is 6:1. 6 years hence, the ratio between the age of A and C is ...
