Category: Percentage MCQs

If 20% of an electricity bill is deducted, then Rs. 100 is till to be paid. How much was the original bill?

A. Rs. 115
B. Rs. 110
C. Rs. 125
D. None of these

Answer

Correct Answer: C. Rs. 125

Detail about MCQs

To solve this problem, let’s denote the original electricity bill amount as .

If 20% of the bill is deducted, the remaining amount to be paid is 100. This means 80% of the bill remains.

We can set up the equation as follows:
0.80×x=100
Now, let’s solve for :
x=100​/0.80=125

So, the original electricity bill was Rs. 125.

Therefore, the correct answer is C. Rs. 125.

A student gets 60, 50 and 90 marks out of 100 in English, Physics and Economics, respectively. How many marks does he need to get in his final paper Maths to obtain overall 72% marks?

A. 88
B. 82
C. 84
D. 86

Answer

Correct Answer: A. 88


Detail About MCQs

Student’s score in English is 60, Physics is 50 and Economics is 90, marks each out of 100.

Since each paper is 100 marks and we have English, Physics, Economics, and Maths, therefore the overall marks will be 400.

For a scholarship, he needs to obtain 72% of 400.

Let the student’s score in Math be “x” marks.

According to the question we have,

60 + 50 + 90 + x = 72% of 400

Or, 200 + x = 72/100 * 400

Or, x = 288 – 200 = 88 marks

Imran made a profit of 20 percent in the first year. Next year, he had a loss of 25 percent on the capital he had at the beginning of second year. What was his overall loss?

A. No loss
B. 12 percent
C. 10 percent
D. 5 percent

Answer

Correct Answer: C. 10 percent


Detail About MCQs

let suppose he has capital 100.

made profit 20% = 120 capital

25% loss  = 120*(25/100) = 30

capital = 120-30 =90

loss = 10% as we know 100-10% = 90

A number is increased by 10% and then decrease b 10%. The net change in the number is:

A. No increase or Decrease
B. 2% decrease
C. 1% increase
D. 1% decrease

Answer

Correct Answer: D. 1% decrease


Detail About MCQs

Let the number is 100

increase 10%=100+10=110

decrease of 10% on 110

= (10/100)×110=11

Net amount 110–11=99

So, decrease 100–99=1

decrease of 1 out of 100

percentage of decrease 1%

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