Question 1
A zookeeper counted the heads of all wildlife in a zoo and found it out to be 60. When he counted the legs of the wildlife, he found it to be 200. If the zoo only had a number of national animals of India and a number of national birds of India, what is the number of birds in the zoo?
(A) 30
(B) 45
(C) 20
(D) 40
Question 2
A 40 L mixture of milk and water contains milk and water in the ratio 3:2. 10 L of the mixture is removed and replaced by pure milk, and this operation is repeated once more. What is the ratio of milk and water in the resultant mixture?
(A) 4:1
(B) 3:1
(C) 31:9
(D) 7:2
Question 3
A group of workers can do a piece of work in 20 days, but 8 of them were absent due to some reason, and it took 10 days longer to complete the work. How many people actually worked on the job to complete it?
(A) 18
(B) 16
(C) 24
(D) 20
Question 4
If a cube of side 8 units of length is cut into cubes of side 1 units of length, then what is the percentage increase in the surface area after such cutting?
(A) 600%
(B) 800%
(C) 700%
(D) 300%
Question 5
If a shopkeeper offers his customers 10% discount and still makes a profit of 26%, how much did an article marked at Rs.280 cost him?
(A) Rs.200
(B) Rs.100
(C) Rs.150
(D) Rs.180
SOLUTIONS TO DAILY CSAT MISSION # 60
1. (C) 2. (D) 3. (D) 4. (A) 5. (D)
Explanations
The following family trees all satisfy the given conditions:
1. The husband of P is Q in all the situations.
2. PQ is definitely a couple. Others are not definitely a couple.
3. Q and U are definitely males (because they are called father to T and grandfather to R respectively).
4. S has already been referred to as grandmother of T. P has to be married to Q, otherwise we will not get two married couples in the family. Since Q is male, so P has to be female.
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