Question
Akash, during his journey, travels for 30 minutes at a
speed of 20 km/h, another 20 minutes at a speed of 30 km/h, and 2 hour at a speed of 40 km/h and 3 hour at a speed of 50 km/h. what is the average velocity?Solution
Total distance = 30/60× 20 + 20/60× 30 + 2× 40 + 3 × 50 = 10 + 10 + 80 + 150 = 250 km Total time = 30/60 + 20/60 + 2 + 3 = 35/6 hr. Average velocity = (Total distance)/(Total time ) = (250 × 6)/35 = 42.85 km/hr.
If A:B = 3:4 and B:C = 5:7, then find the value of A:B:C.
The ratio of milk to water in a mixture is 5:2. If 14 liters of water is added, the ratio becomes 5:4. Find the quantity of milk in the mixture.
In a jug, there is a mixture of apple and orange juice in the ratio of 1:3. When 10 liters of Apple juice are added, the ratio of apple to orange juice ...
Ratio between two numbers is 9:14 and their difference is 55. Find the sum of the given two numbers.
If A varies directly as B and inversely as C and A = 8, B = 2 and C = 5, what is the value of A when B = 6 and C = 5?
In 2020, the incomes of A and B were in the ratio 8:5, and their expenses were in the ratio 5:3. A’s savings in 2020 exceeded B’s savings by ₹5,00...
A bag contains Re 1 and 50 paise coins in the ratio 2 : 3. While the ratio of 50 paise and 25 paise is 4:5. If the total value of these coins is Rs 177....
The cost of diamond varies directly as the square of its weight. A diamond broke into four pieces with weights in the ratio 4 : 5 : 6 : 7. if the loss i...
A boy is supposed to distribute Rs.2400 among his three friends P, Q and R in the ratio of 4:3:5 respectively, but mistakenly he distributed in the rati...
6 years ago ratio of the ages of the two persons A and B was 5:3. 3 years hence the ratio of their ages will be 4:3. Find the present age of B.
