Question
A car travels from city ‘A’ to city ‘B’ covering
(1/3)rd of the total distance in 5 hours and the rest in 7 hours. If it takes 8 hours to return to city ‘A’ from city ‘B’, determine the average speed for the entire journey, given that the distance between city ‘A’ and city ‘B’ is 90 km.Solution
ATQ,
Average speed = total distance covered ÷ total time taken
Total time taken = 5 + 7 + 8 = 20 hours
Total distance covered = 90 × 2 = 180 km.
Required average speed = 180/20 = 9 km/h
Quantity of water in a 350 litres mixture (alcohol + water) is 22 litres less than the quantity of alcohol in it. Find the quantity of water to be mixe...
A container contains Alcohol and water in ratio of 4:3 and Capacity of Container is 28 lit. If half of the Container is replaced with 25 lit of water th...
If 4 kg of metal of which 1/3rd is zinc and the rest is copper, be mixed with 5kg of metal, of which 1/6 is zinc and the rest is copper, then...
An alloy of copper and tin contains 85% of copper. If 28 kg of more tin is added to the alloy, the copper content gets reduced to 50%. Find the quantity...
A vendor mixes 4 kg of oil at Rs. 10 per kg with 6 kg at Rs. 6 per kg. What is the cost price (in Rs.) of the mixture per kg?
A petrol station mixes 60 liters of petrol and diesel in the ratio of 2:1. After dispensing 24 liters of the mixture, 18 liters of petrol are added. Fol...
A container holds 260 liters of a solution of milk and water mixed in the ratio of 7:6 respectively. ‘x’ liters of this solution is drawn out and re...
A mixture of honey and lemon juice is in the ratio 4:1. If 40% of the mixture is replaced with lemon juice, what will be the new ratio of honey to lemon...
- A milk seller has a 80-litre mixture of milk and water, where water makes up 25% of the total volume. He wants to adjust the mixture so that the amounts of...
120 litres of a solution contains 48 litres of water. How much of this solution should be removed so that the quantity of milk becomes 42 litres?
Relevant for Exams:
