Demo 9

Alligation & Mixture Quiz (Q1–10)

1. How much water should be added to 90 ml of a 38% sugar solution so that it becomes a 17.1% sugar solution?

(a) 81 ml (b) 95 ml (c) 110 ml (d) 100 ml

2. In a mixture of 90 litres, the ratio of milk to water is 4:1. In another mixture of 90 litres, the ratio of milk to water is 3:2. What is the positive difference between the quantities of milk in the two mixtures?

(a) 22 litres (b) 18 litres (c) 23 litres (d) 16 litres

3. A shopkeeper mixes 30 kg of rice at ₹30/kg and 40 kg at ₹28/kg. He sells at ₹28/kg. Find profit/loss %?

(a) 7% profit (b) 6% loss (c) 3% loss (d) 5% profit

4. In 80 litres mixture, milk:water=3:1. To make ratio 2:3, water added is?

(a) 30L (b) 20L (c) 70L (d) 50L

5. Alloy of Al:Ni=3:4. Nickel needed with 36kg Al?

(a) 18 (b) 32 (c) 48 (d) 3

6. 10L solution, 2L evaporated. Remaining has 6% salt. What was original %?

(a) 4.8% (b) 5.6% (c) 5% (d) 5.4%

7. Acid:Alcohol=3:2. After adding 10L alcohol, ratio=3:5. Acid in original mixture?

(a) 10L (b) 5.5L (c) 5L (d) 4.5L

8. Mixture has 1/5 acid, 3/5 alcohol, rest water. If total=20L, water=?

(a) 12 (b) 8 (c) 4 (d) 15

9. Water:Milk=4:5 in 72L mixture. How much milk to add for ratio 3:6?

(a) 24L (b) 12L (c) 72L (d) 36L

10. How much 80% orange juice must be mixed with 36L of 25% juice to get 60% juice?

(a) 63L (b) 60L (c) 40L (d) 72L