Alligation And Mixtures Model Questions & Answers, Practice Test for ssc cgl tier 1 2024

Answer: (d)

According to the question,

S.P. of mixed tea = Rs. 194.40

Profit = 20% = $1/5$ (1 → Profit, 5 → C.P.)

S.P. = 6 units

6 units = $194.40/6$ = 32.4

5 units - 5 × 32.4 = Rs. 162

By Alligation

Answer: (b)

We cannot determine the answer to this question as we do not know the price per kg of the other type of ghee.

Hence, we cannot find the ratio of mixing which would be required in order to move further in this question.

Answer: (d)

Go through options :

30 × 50 + 50 × 20 = 2500 paise

Alternatively :

Since the average price of a coin

= $2500/80$ = 31.25 paise

So the ratio of no. of 20 paise coins to the no. of 50 paise coins

= 18.75 : 11.25

= 75 : 45 = 5 : 3

Therefore, the no. of coins of the denominations of 50 paise is 30.

Answer: (c)

According to the question,

Mixture = 240 cc

Ratio of ${Water}/{Glycerine} = 1/3$ > 4 units

4 units → 240

1 unit → 60

Thus, ${Water}/{Glycerine} = {1 × 60}/{3 × 60} = 60/180$

Water 60 + [x] Glycerine 180 × 60

× 60 ↓ 120

Thus, 60 + x = 120

x = 60 cc

Quantity of water added = 60

Answer: (c)

According to the question,

Alloy contains 12% of copper

= $12/100 = 3/25$ (3 → Copper, 25 → Mixture)

3 kg of copper in 25 kg mixture

1 kg of copper

= $25/3$ kg mixture

69 kg of copper

= $25/9 × 69$ = 25 × 23 = 575 kg

Alloy = 575 kg