In an election between two candidates K and L, the number of valid votes received by K exceeds those received by L by 15% of the total number of votes polled. If 20% of the votes polled were invalid and a total of 8720 votes were polled, then how many valid votes did L get ?

Correct Answer: 8000

Explanation:

Let the amount collected be 'A'
Then, from the given conditions,
A x 110/100 x 90/100 = 7920
A x 0.99 = 7920
A = 7920/0.99
=> 8000

Correct Answer: Rs.12,000

Explanation:

We have P = 8748, R = -10 and n = 3
Therefore, the purchase price of the machine
= P 1 + R 100 n= 8748 1 - 10 100 3
= 8748 x (100/90) x (100/90) x (100/90)
= 12,000.

 

Therefore, the purchase price of the machine was Rs. 12,000.

Correct Answer: 92.8%

Explanation:

Here, x = 40 and y = 30;
Therefore second number
= [[ 100 + y 100 + x] x 100 ]% of first number
= [[ 100 + y 100 + x] x 100 ]% of first number
Second number = 92.8% of the first number.

Correct Answer: 149600 kgs

Explanation:

Let the total quantity of gold be p kgs.

According to the question,

50% of p + 25% of p + 12.5% of p = 130900

87.5% of p = 130900

p = 130900 x 100/87.5  = 149600 kgs.

 

Therefore, the initial gold quantity that king has = p = 149600 kgs.

Correct Answer: decrease 12%

Explanation:

Given the price of a commodity is decreased by  p = 20%

And its consumption is increased by q = 10%

Now, required increase or decrease in the expenditure on the commodity can be 

p + q + pq/100 = -20 + 10 - 200/100 = -10 - 2 = -12%.

 

Hence, decrease in the expenditure = 12%

 

Correct Answer: 35

Explanation:

what is 70 of 50 means 70% of 50

 

$$\begin{gathered} ? 70 x 50 100 \\ = 7 x 5 \\ = 35 \end{gathered}$$

 

Hence, 70 of 50 is 35.

Correct Answer: 100

Explanation:

Given 

4 4 5 of 259.99 = ? % of 1247.9

24/5 x 260 = ? x 1248/100

? = 1248 x 100/1248

? = 100.

Correct Answer: 1947

Explanation:

Given 82.5% of 2360

  82 . 5 100 x 2360 = 0 . 825 x 2360 = 1947

Correct Answer: 60

Explanation:

Total engineers = 4800

Number of female engineers = 3/8 x 4800 = 1800

Then, number of male engineers = 4800 - 1800 = 3000

Now, required is female engineers is what percentage of the number of male engineers

=> 1800 is what % of 3000

=> p x 3000/100 = 1800

=> 30p = 1800

p = 60%

 

Hence, female engineers is 60 percentage of the number of male engineers.

Correct Answer: 4 yrs

Explanation:

From the given data in the question,

$$\begin{gathered} 279841 = 160000 x 1 + 15 100 t \\ 279841 160000 = 115 100 t \end{gathered}$$

t = 4 years.