**Let us solve some CGL questions that may not seem to belong to Mixture-Alligation category, but are easier to solve via Alligation formula…**

**Q. 1)**
Let the gain% of the remaining land be x%. Then

Given, 2/5 land is sold on loss and hence 3/5 land is sold on profit

So, Profit : Loss = 3:2

Hence 16 : (x – 10) = 3 : 2

16/(x – 10) = 3/2

or x = 62/3%

**Answer : (B)**

**Q. 2)**
His average speed for the entire journey = 61/9 km/hour

Time taken on foot : Time taken on bicycle = (9 – 61/9)/(61/9 – 4) = 4:5

Time taken on foot = 4/9 * 9 = 4 hours

Hence distance travelled on foot = (Speed on foot * Time taken on foot) = 4*4 = 16 km

**Answer : (C)**

__Alternate method__

This method is equally easy.

Let the distance travelled on foot be X km. Then distance travelled on bicycle = (61 – X)

Now he travelled for 9 hours. Hence

X/4 + (61 – X)/9 = 9

Solve for X

You will get X = 16 km

**Q. 3)**
Number of legs per head = 420/180 = 7/3

Now cows have 4 legs while hens have 2 legs

Cows : Hens = 1/3 : 5/3 = 1 : 5

Now total number of cows and hens = total number of heads = 180

Number of cows = 1/6 * 180 = 30

**Answer : (B)**

**Q. 4)**
A : B = 3 : 4 and B: C = 4 : 5

A : B : C = 3 : 4 : 5

Average score of classes A, B and C =

**Answer : (B)**

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**Q. 5)**
The man spends 75% of his income, that means he saves 25%

Hence Expenditure : Saving = 75 : 25 = 3 : 1

Let the % increase in the savings be x.

I have written 3 : 1 as 30 : 10 so that (% increase in income – % increase in expenditure) could agree with 3 : 1 ratio. As we know 20 – 10 = 10, not 1.

So now from the figure we can see that x – 20 = 30

Hence x = 50%

**Answer : (C)**

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**Q. 6)**
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If whole money is invested at 6%, then interest = 6% of 1500 = Rs. 90

If whole money is invested at 5%, then interest = 5% of 1500 = Rs. 75

Hence, Money invested at 6% : Money invested at 5% = 10 : 5 = 2 : 1

Money invested at 5% = 1/3 * 1500 = Rs. 500

**Answer : Rs. 500**

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If you have any doubt in this article, please drop a comment…

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