# Percentage Questions Set 1

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Questions on percentage with solutions

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Tensorflow 2 & Keras:Deep Learning & Artificial Intelligence

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by Goeduhub's Expert (5.8k points)
edited

## Percentage Questions Set 1

Q.1. What is 40 % of 280 ?

1. 112
2. 116
3. 115
4. 120

x % of given no n =  (x/100) *n

40% of 280 = (40/100) * 280 = 112

Q.2. A fruit seller had some apples. He sells 40% apples and still has 420 apples. Originally, he had

1. 620
2. 750
3. 700
4. 680

Suppose originally he had x apples.

Then, (100 - 40)% of x = 420

(60/100) * x = 420

x = 700

Q.3. Whose 35% is 280?

1. 700
2. 750
3. 800
4. 850

Let the required value is x.

As per question; 35% of x = 280

(35/100) * x = 280

x = 800

Q.4. If 40% of an amount is 250, what will be 60% of that amount?

1. 375
2. 320
3. 300
4. 400

Let the amount be x.

As per question: 40% of x = 250

(40/100) * x = 250

x = 625

Now, 60% of 625 = (60/100) *625 = 375

Q.5. If 30 % of 1520 + 40 % of 800 = x % of 5000, find the value of x.

1. 14.42%
2. 15.52%
3. 12.22%
4. 18.82%

(30/100) * 1520 + (40/100) * 800 = (x/100) * 5000

456 + 320 = (x/100) * 5000

x = 77600/5000 = 15.52%

Q.6. If 20% of a = b, then b% of 20 is the same as

1. 4% of a
2. 12% of a
3. 7% of a
4. 6% of a

20% of a = b i.e. (20/100)* a = b

b% of 20 = (b/100)* 20 = (20/100)* a * (1/100) * 20 = (4/100) * a = 4% of a

Q.7. In an examination, 25% candidates failed in English and 35 % students failed in Math.If 15 % candidates failed in both, what is the percentage of candidates who passed in both the subjects?

1. 45 %
2. 50 %
3. 55 %
4. 58 %

100 - (x + y - z)

x = 25%, y = 35 %, z = 15 %

∴ Required percentage of candidates = 100 - (25 + 35 - 15) = 100 - 45 = 55%

Q.8.  Passing marks in an examination are 40%. If a candidate gets 65 marks and fails by 15 marks, the maximum marks in the examination are

1. 200
2. 220
3. 180
4. 250

Apply formula m = 100(y + z)/ (x)

y = 65, z = 15, x = 40

m = 100 * (65 + 15) / 40 = 200

Q.9. Two numbers A and B are such that the sum of 5% of A and 4% of B is two-third of the sum of 6% of A and 8% of B. Find the ratio of A : B

1. 1 : 2
2. 4 : 3
3. 2 : 5
4. 1 : 3

5% of A + 4% of B = (2/3) * (6% of A + 8% of B)

(5/100)* A + (4/100)*B = (2/3) * (6A/100 + 8B/100)

On solving, we get

A/100 = B/75

A : B = 4 : 3

Q.10. If the height of Ramesh is less by 20% than Suresh, the height of Suresh will be greater than that of Ramesh by how many percent?

1. 25%
2. 30%
3. 32%
4. 28%

Apply formula (r / (100-r)) * 100 %

r = 20%

Required Percentage = (20 / (100-20)) * 100 %

= (20/80) * 100 = 25%

For any queries or doubts refer to comment section mentioning question number  with doubt