1**. **Fraction value of 25% is

**(a) **

**(b) **

**(c) **

**(d)**

**Answer: (a)**

**Explanation:**

25% means 25 hundredths

In other words, the rate percent is the quantity for every hundred**.**

For example, 25% means 25 for every hundred**.**

2**. **What is 5% of Rs**. **200? [SSC Grad**. **1999]

**(a) **Rs**. **0**. **25

**(b) **Rs**. **25

**(c) **Rs**. **50

**(d) **Rs**. **10

**Answer: (d)**

**Explanation:**

As a fraction,, for example

5% of Rs**. **200 =

3**. **In an examination, a student who gets 20% of the maximum marks fails by 5 marks**. **Another student who scores 30% of the maximum marks gets 20 marks more than the pass marks**. **The necessary percentage required for passing is? [SSC Grad**. **2000]

**(a) **32%

**(b) **23%

**(c) **22%

**(d) **20%

**Answer: (c)**

**Explanation:**

Let the maximum marks = x

Then by given condition, passing marks =

Percentage required for passing=

4**. **If Shamira earns 25% less than Karthiga, how much percent does Karthiga earn more than Shamira?

**(a) **

**(b) **

**(c) **

**(d) **22

**Answer: (b)**

**Explanation:**

If A is R% less than B, then B is more than A by:

Here, R%=25%

Karthiga earn more than Shamira by =

5**. **If the price of petrol is increased by 30%, by how much percent a car owner must reduce his expenditure in order to maintain the same budget? [SSC Grad**. **2000]

**(a) **33%

**(b) **

**(c) **

**(d) **21%

**Answer: (b)**

**Explanation:**

If A is R% more than B, then B is less than A by:

Here, R%=30%

6**. **The price of a MTC bus is 3, 25,000**. **The value of a MTC bus depreciates at the rate of 10% per annum**. **What will be the worth of MTC bus after 2 years?

**(a) **263250

**(b) **273250

**(c) **280000

**(d) **None of these

**Answer: (a)**

**Explanation:**

Value of a machine after n years =

Value of the MTC bus after 2 years =

= 263250

7**. **The value of a machine depreciates at rate of 20% per annum**. **If its value is Rs**. **3200, what was the value of the machine 2 years ago?

**(a) **3240

**(b) **1620

**(c) **6800

**(d) **5000

**Answer: (d)**

**Explanation:**

Let the present value of a machine be P**. **suppose it depreciates at the rate of R% per annum**. **Then,

Value of the machines n years ago =

R%=20%; present value=3200; n=4

Value of a machine 4 years ago=

= 0**. **0005%

8**. **In expressing a breadth is 80**. **6 km as nearly as possible with three significant digits, Find the percentage error?

**(a) **0**. **60%

**(b) **0**. **50%

**(c) **0**. **90%

**(d) **0**. **05%

**Answer: (b)**

**Explanation:**

Required percentage =

= 0**. **496%

Required percentage = 0**. **496%