Question 1
Answer
Question 1
If the arithmetic mean and geometric mean of two numbers in 75 and 60 respectively. The ratio of harmonic mean to geometric mean to the number is?
A. 4:5
B. 3:5
C. 5:3
D. 5:7
Answer
Option A – 4:5
Question 2
Answer
Question 2
Solutions A and B contain acid and water in the ratio of 5: 6 and 7: 4 respectively. A and B are mixed in the ratio of 3: 5. In 352mL of this solution, how much water (in ml) should be added to make it a solution containing acid and water in the ratio of 10:9?
A. 28
B. 35
C. 32
D. 30
Answer
Option A – 28
Question 3
Answer
Question 3
In a business, A,B and C invest their capitals in the ratio of 4:5:8. The ratio of months for which they invested their capital is 3:2:4. If C gets a share of profit which is Rs. 5280 more than that of B, what is A’s share in the profit?
A. Rs.3840
B. Rs.2880
C. Rs.1440
D. Rs.2400
Answer
Option B – Rs. 2880
Question 4
Answer
Question 4
Find the geometric mean of the data 5,75,9
A. 45
B. 5
C. 15
D. 9
Answer
Option C – 15
Question 5
Answer
Question 5
For doing a certain work the efficiency of A, B and C are in ratio 3:7:5. Working together they can complete the work in 21 days. B alone can complete the original work in:
A. 30
B. 45
C. 42
D. 28
Answer
Option B – 45
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Question 6
Answer
Question 6
The height and the radius of a cylinder vessel are in the ratio of 7: 3. The five-eleventh part of the vessel is full of 2.43 litres of water. What is the curved surface area of the vessel?
A. 1188 sq.cm
B. 1326 sq.cm
C. 1292 sq.cm
D. 1248 sq.cm
Answer
Option B – 1326 sq.cm (not sure)
Question 7
Answer
Question 7
Rahul and Sachin can complete work in 60 days and 45 days respectively. Rahul starts working with 120% of his capacity. In how many days will they complete 75% of the work if they work together?
A. 19.85
B. 17.64
C. 25.71
D. 16.24
Answer
Option B – 17.64
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