Question
How many people belong to only one
group? In a group of 60 people, all of them belong to at least one group- X, W and Z. 12 people belong only to the Z group. 10 People belong to all the three groups. 4 people have joined the X and Z group but not the W group. 30 people belong to the Z group. 4 people have joined only the X group. 6 people have joined only the W group.Solution
People belonging to one group = (12+6+4) = 22
An alloy of copper and tin contains 65% of copper. If 12 kg of more tin is added to the alloy, the copper content gets reduced to 50%. Find the quantity...
The cost of 3 kg of rice is Rs. 180. The cost of 8 kg of rice is equal to that of 5 kg of pulse. The cost of 15 kg of pulses is equal to that of 2 kg of...
In a 150-liter mixture, the ratio of petrol to diesel is 4:1. To obtain a final mixture with 25% diesel, how much diesel needs to be added to the existi...
A container holds 640 litres of a solution of milk and water in the ratio 3:5. If (x + 20) litres of water is added, the new ratio of milk to water beco...
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 certain mixture consists of oil and water, with the water content exceeding that of oil by 20%. When 70 ml of oil and 60 ml of water are introduced in...
In a mixture of milk & water, 30 litres water is mixed due to which ratio changes from 3 : 4 to 1 : 2. Find initial quantity of mixture. (in litres)
- Two mixtures, X and Y, have milk-to-fruit juice ratios of 4:5 and 7:8, respectively. When these two mixtures are combined, the total quantity of the final ...
A man buys two varieties of sugar weighing 50 kg and 80 kg at ₹60 and ₹70 per kg respectively. He mixes the two varieties and sells the entire mixtu...
- A mixture of salt and water has a ratio of 2:1. After adding 8 liters of water, the amount of salt becomes 12 liters more than the amount of water. What wa...
Relevant for Exams:
