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- Question
- Deepak has some hens and some goats. If the total number of animal heads is 90 and the total number of animal feet is 248, what is the total number of goats Deepak has?
Options- A. 32
- B. 36
- C. 34
- D. Cannot be determined
- Correct Answer
- 34
ExplanationLet hens = H, goats = G
According to the question,
H + G = 90 ...(i)
2H + 4G = 248 ...(ii)
On multiplying Eq. (i) by 2 and subtracting from Eq. (ii) , we get
2H + 2G = 180
2H + 4G = 248
-------------------
-2G = -68
? G = 34 - 1. 15 men complete a work in 16 days If 24 men are employed then the time require to complete that work will be
Options- A. 7 days
- B. 8 days
- C. 10 days
- D. 12 days Discuss
- 2. L?M is surd of order ........, where M is a rational number; L is a positive integer and L?M is irrational.
Options- A. L
- B. M
- C. 2
- D. 4 Discuss
- 3. log -1/3 81 is equal to?
Options- A. - 27
- B. - 4
- C. 4
- D. 127 Discuss
- 4. The average age of A,B,C,D and E is 40 years.The average age of A and B is 35 years and the average age of C and D is 42 years .The age of E is
Options- A. 46
- B. 48
- C. 32
- D. none of these Discuss
- 5. 6 bells commence tolling together and toll of intervals are 2, 4, 6, 8, 10 and 12 s, respectively. In 1 h, how many times, do they toll together?
Options- A. 16
- B. 32
- C. 21
- D. 35 Discuss
- 6. 20 persons completed 1/3rd of the work in 12 days. How many more person are required to finish the rest work in next 12 days?
Options- A. 20
- B. 12
- C. 18
- D. 40 Discuss
- 7. Find the bankar's discount at a bill of ? 12750 due four months hence when rate of interest is 6% per annum?
Options- A. ? 250
- B. ? 120
- C. ? 255
- D. ? 300 Discuss
- 8. A man ordered 4 pairs of black socks and some pairs of brown socks. The price of a black sock is double that of a brown pair. While preparing the bill the clerk interchanged the number of black and brown pairs by mistake which increased the bill by 50%. The ratio of the number of black and brown pairs of socks in the original order was :
Options- A. 2:1
- B. 1:4
- C. 1:2
- D. 4:1 Discuss
- 9. City A has a population of 136000 which is decreasing at the rate of 2400 per year , City B has a population of 84000 which is increasing at the rate of 1600 per year . In how many years will the population of two cities become equal ?
Options- A. 15
- B. 18
- C. 13
- D. 19 Discuss
- 10. A man invested Rs. 4455 in Rs. 10 shares quoted at Rs. 8.25. If the rate of dividend be 12%, his annual income is:
Options- A. Rs. 207.40
- B. Rs. 534.60
- C. Rs. 648
- D. Rs. 655.60 Discuss
More questions
Correct Answer: 10 days
Explanation:
let the work done be 1 work.
Here M1=15, D1=16 W1=W2 =1
M2 =24 D2= ?
? According to the formula
M1 D1 W2 = M2 D2 W1
? 15 x 16 x 1 = 24 x D2 X 1
? D1 = 15 X 16/24 = 10
Therefore 10 days are required to complete the work
Correct Answer: L
Explanation:
L?3 = M1/L = Surd of Lth order.
Correct Answer: 4
Explanation:
Let log-1/381 = x
? 81 = (-1/3)x
? 34 = (-1/3)x = 3-x
? x = -4
Correct Answer: 46
Explanation:
Age E = ( A + B + C + D + E ) - [ ( A + B ) + ( C + D ) ]
= ( 40 x 5 ) - [ ( 35 x 2 ) + ( 42 x 2 )]
=200 - ( 70 + 84)
= 200 - 154
= 46
Correct Answer:
Explanation:
LCM of 2, 4, 6, 8, 10, 12
=(2 x 2 x 3 x 2 x 5) = 120
? After every 2 min, they toll together.
? Number of times they toll together in one hour = (60/2) + 1 times
= 31 times
Correct Answer: 20
Explanation:
Work done = 1/3
Remaining work = 2/3
So for double work in same days we need double number of people i.e. 40.
So, 20 men will be increased.
Correct Answer: ? 255
Explanation:
Given That, A = ? 12750, R = 6%
and T = 4 Months = 4/12 = 1/3 yr , BD = ?
According to the formula,
BD = (A x R x T)/100
= [12750 x 6 x (1/3)] / 100
= (12750 x 2) / 100
= ? 255
Correct Answer: 1:4
Explanation:
Let us assume the number of brown socks = B
Let us assume the price of brown socks = ? P per pair
Then price of black socks = ? 2P per pair
Before interchanging the shocks the amount = amount of black shocks + amount of brown shocks
? Before interchanging the shocks the total amount = 4 x 2P + B x P
? Before interchanging the shocks the total amount = 8P + BP
After interchanging the shocks the total amount = amount of black shocks + amount of brown shocks
? After interchanging the shocks the total amount = 4 x P + B x 2P
? After interchanging the shocks the total amount = 4P + 2BP
According to question,
After interchanging the shocks the total amount = Before interchanging the shocks the amount + Before interchanging the shocks the amount x 50 %
4P + 2BP = 8P + BP + (8P + BP ) x 50%
? 4P + 2BP = 8P + BP + (8P + BP ) x 50/100
? 4P + 2BP = 8P + BP + (8P + BP ) x 1/2
? 4P + 2BP = ( 16P + 2BP + 8P + BP ) x 1/2
? (4P + 2BP) x 2 = ( 16P + 2BP + 8P + BP )
? 8P + 4BP = 24P + 3BP
? 8P + 4BP = 24P + 3BP
? 4BP - 3BP = 24P - 8P
? BP = 16P
? B = 16
The ratio of the number of black and brown pairs of socks = Number of block shocks / Number of Brown Shocks
? The ratio of the number of black and brown pairs of socks in the original order = 4/16 = 1/4 = 1: 4
Correct Answer: 13
Explanation:
Let population of cities A and B become equal after x year.
According to the question.
Population of city A = Population of city B
Then,
136000 - 2400 x = 84000 + 1600 x.
? 4000x = 52000
? x = 52/4 = 13 year
Correct Answer: Rs. 648
Explanation:
| Number of shares = | ❨ | 4455 | ❩ | = 540. |
| 8.25 |
Face value = Rs. (540 x 10) = Rs. 5400.
| Annual income = Rs. | ❨ | 12 | x 5400 | ❩ | = Rs. 648. |
| 100 |
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