Mixtures Questions, Answers & Explanations

Q1

Not Answered

Q1. Mix 14 L of 40% acid solution with 14 L of 90% solution. Find final acid percentage.

A 69 B 65 C 61 D 59

Final % = (14x40+14x90)/(28) = 65%.

Q2

Not Answered

Q2. A 40 L vessel is full of milk. 10 L milk is removed and replaced with water. What is milk percentage now?

A 75 B 67 C 71 D 79

Milk left = 30 L out of 40 L. Milk % = 30/40 x 100 = 75%.

Q3

Not Answered

Q3. Mix 14 L of 50% acid solution with 6 L of 80% solution. Find final acid percentage.

A 53 B 55 C 63 D 59

Final % = (14x50+6x80)/(20) = 59%.

Q4

Not Answered

Q4. A shopkeeper mixes 13 kg tea at Rs. 54/kg with 13 kg tea at Rs. 94/kg. What is average cost per kg?

A 68 B 77 C 74 D 71

Average cost = (13x54+13x94)/(26) = 74.

Q5

Not Answered

Q5. Mix 14 L of 20% acid solution with 6 L of 60% solution. Find final acid percentage.

A 28 B 26 C 36 D 32

Final % = (14x20+6x60)/(20) = 32%.

Q6

Not Answered

Q6. A shopkeeper mixes 6 kg tea at Rs. 56/kg with 12 kg tea at Rs. 146/kg. What is average cost per kg?

A 119 B 113 C 116 D 110

Average cost = (6x56+12x146)/(18) = 116.

Q7

Not Answered

Q7. Mix 8 L of 30% acid solution with 16 L of 90% solution. Find final acid percentage.

A 66 B 74 C 70 D 64

Final % = (8x30+16x90)/(24) = 70%.

Q8

Not Answered

Q8. A 50 L vessel is full of milk. 15 L milk is removed and replaced with water. What is milk percentage now?

A 74 B 66 C 62 D 70

Milk left = 35 L out of 50 L. Milk % = 35/50 x 100 = 70%.

Q9

Not Answered

Q9. A shopkeeper mixes 15 kg tea at Rs. 59/kg with 11 kg tea at Rs. 137/kg. What is average cost per kg?

A 86 B 95 C 92 D 89

Average cost = (15x59+11x137)/(26) = 92.

Q10

Not Answered

Q10. A 20 L vessel is full of milk. 15 L milk is removed and replaced with water. What is milk percentage now?

A 21 B 25 C 17 D 29

Milk left = 5 L out of 20 L. Milk % = 5/20 x 100 = 25%.

Q11

Not Answered

Q11. A shopkeeper mixes 10 kg tea at Rs. 43/kg with 10 kg tea at Rs. 125/kg. What is average cost per kg?

A 78 B 87 C 81 D 84

Average cost = (10x43+10x125)/(20) = 84.

Q12

Not Answered

Q12. A 50 L vessel is full of milk. 20 L milk is removed and replaced with water. What is milk percentage now?

A 64 B 60 C 56 D 52

Milk left = 30 L out of 50 L. Milk % = 30/50 x 100 = 60%.

Q13

Not Answered

Q13. A shopkeeper mixes 5 kg tea at Rs. 37/kg with 8 kg tea at Rs. 102/kg. What is average cost per kg?

A 80 B 71 C 77 D 74

Average cost = (5x37+8x102)/(13) = 77.

Q14

Not Answered

Q14. A 25 L vessel is full of milk. 5 L milk is removed and replaced with water. What is milk percentage now?

A 76 B 84 C 72 D 80

Milk left = 20 L out of 25 L. Milk % = 20/25 x 100 = 80%.

Q15

Not Answered

Q15. Mix 17 L of 50% acid solution with 17 L of 90% solution. Find final acid percentage.

A 64 B 66 C 74 D 70

Final % = (17x50+17x90)/(34) = 70%.

Q16

Not Answered

Q16. A shopkeeper mixes 9 kg tea at Rs. 61/kg with 9 kg tea at Rs. 125/kg. What is average cost per kg?

A 96 B 93 C 90 D 87

Average cost = (9x61+9x125)/(18) = 93.

Q17

Not Answered

Q17. A 25 L vessel is full of milk. 15 L milk is removed and replaced with water. What is milk percentage now?

A 32 B 36 C 40 D 44

Milk left = 10 L out of 25 L. Milk % = 10/25 x 100 = 40%.

Q18

Not Answered

Q18. A shopkeeper mixes 10 kg tea at Rs. 37/kg with 9 kg tea at Rs. 94/kg. What is average cost per kg?

A 61 B 58 C 67 D 64

Average cost = (10x37+9x94)/(19) = 64.

Q19

Not Answered

Q19. A 40 L vessel is full of milk. 20 L milk is removed and replaced with water. What is milk percentage now?

A 54 B 46 C 42 D 50

Milk left = 20 L out of 40 L. Milk % = 20/40 x 100 = 50%.

Q20

Not Answered

Q20. A shopkeeper mixes 5 kg tea at Rs. 69/kg with 10 kg tea at Rs. 120/kg. What is average cost per kg?

A 100 B 97 C 103 D 106

Average cost = (5x69+10x120)/(15) = 103.

Mixtures

Ready to practice?

Q1. Mix 14 L of 40% acid solution with 14 L of 90% solution. Find final acid percentage.

Q2. A 40 L vessel is full of milk. 10 L milk is removed and replaced with water. What is milk percentage now?

Q3. Mix 14 L of 50% acid solution with 6 L of 80% solution. Find final acid percentage.

Q4. A shopkeeper mixes 13 kg tea at Rs. 54/kg with 13 kg tea at Rs. 94/kg. What is average cost per kg?

Q5. Mix 14 L of 20% acid solution with 6 L of 60% solution. Find final acid percentage.

Q6. A shopkeeper mixes 6 kg tea at Rs. 56/kg with 12 kg tea at Rs. 146/kg. What is average cost per kg?

Q7. Mix 8 L of 30% acid solution with 16 L of 90% solution. Find final acid percentage.

Q8. A 50 L vessel is full of milk. 15 L milk is removed and replaced with water. What is milk percentage now?

Q9. A shopkeeper mixes 15 kg tea at Rs. 59/kg with 11 kg tea at Rs. 137/kg. What is average cost per kg?

Q10. A 20 L vessel is full of milk. 15 L milk is removed and replaced with water. What is milk percentage now?

Q11. A shopkeeper mixes 10 kg tea at Rs. 43/kg with 10 kg tea at Rs. 125/kg. What is average cost per kg?

Q12. A 50 L vessel is full of milk. 20 L milk is removed and replaced with water. What is milk percentage now?

Q13. A shopkeeper mixes 5 kg tea at Rs. 37/kg with 8 kg tea at Rs. 102/kg. What is average cost per kg?

Q14. A 25 L vessel is full of milk. 5 L milk is removed and replaced with water. What is milk percentage now?

Q15. Mix 17 L of 50% acid solution with 17 L of 90% solution. Find final acid percentage.

Q16. A shopkeeper mixes 9 kg tea at Rs. 61/kg with 9 kg tea at Rs. 125/kg. What is average cost per kg?

Q17. A 25 L vessel is full of milk. 15 L milk is removed and replaced with water. What is milk percentage now?

Q18. A shopkeeper mixes 10 kg tea at Rs. 37/kg with 9 kg tea at Rs. 94/kg. What is average cost per kg?

Q19. A 40 L vessel is full of milk. 20 L milk is removed and replaced with water. What is milk percentage now?

Q20. A shopkeeper mixes 5 kg tea at Rs. 69/kg with 10 kg tea at Rs. 120/kg. What is average cost per kg?

Quiz Summary

Mixtures Practice Questions with Answers

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