Question
Ajay and Vishal left the place ‘X’ with different
speeds which are in the ratio 9:4 respectively. Ajay left the place 30 seconds after Vishal. If after 72 seconds of the departure of Vishal, Ajay is 40 meters apart from Vishal, then find the speed of Vishal.Solution
Let the speeds of Ajay and Vishal be 9x and 4x km/hr respectively. Distance covered by Vishal in 72 seconds = 4x x (5/18) x 72 = 80x m Distance covered by Ajay in 30 seconds = 9x x (5/18) x 30 = 75x m According to the question, => 80x – 75x = 40 => x = 8 Therefore the speed of Vishal = 4x = 32 km/hr
Radius of base of a hollow cone is 8 cm and its height is 15 cm. A sphere of largest radius is put inside the cone. What is the ratio of radius of base ...
- A piggy bank holds 20-paise, 50-paise and 2-rupee coins in the ratio 15:12:9. The total amount inside is Rs. 3006. How many 50-paise coins are there?
If A:B:C = 2:3:8 and (C - B) = 130, then find the product of 'C' and 'A'.
There are 120 balloons of three different colours in a box. The ratio of red balloons to yellow balloons is 2:3, and the ratio of red balloons to green ...
Three numbers are in the ratio 4:5:6. If the sum of the largest and smallest numbers is 60 more than the middle number, what is the largest number?
Sneha had 900 stickers. She gave 50% of them to Tina and Meena in the ratio of 4:5. What is the difference between the stickers Meena received and the n...
Ratio of the number of pens with Sumit, Rohan, Chetan, Dheeraj and Gagan is 2 : 3 : 4 : 5 : 6 respectively. If two of them have more than 20% of the tot...
The cost of diamond varies directly as the square of its weight. A diamond broke into four pieces with weights in the ratio 1 : 4 : 5 : 6. if the loss i...
- The ratio of men to women in a club is 3:2. If the number of men was 18 less and the number of women was 12 more, then both would be equal in number. Find ...
Relevant for Exams:
