123

140

156

234

B. 140

Let the number be x.

Then, 4*x/5 –(65% of x) = 21

4x/5 –65x/100 = 21

5 x = 2100

x = 140.

2500

2789

3456

1234

123

140

156

234

100%

120%

180%

200%

48gm

45gm

40gm

38gm

**Difference of two numbers is 1660. If 7.5% of the number is 12.5% of the other number , find the number ?**

3456

4156

4150

5678

**If the sales tax reduced from 3 1/2 % to 3 1/3%, then what difference does it make to a person who purchases an article with market price of Rs. 8400 ?**

10

12

14

19

25%

27%

35%

67%

**In expressing a length 810472 km as nearly as possible with three significant digits , find the percentage error.**

34%

0.34%

0.034%

.32%

8

*6*

7

5

120%

130%

800%

1300%

2%

4%

5%

8%

50%

100%

125%

150%

1%

2%

3%

4%

**In an election between two candidates, 75% of the voters cast thier thier votes, out of which 2% of the votes were declared invalid. A candidate got 9261 votes which were 75% of the total valid votes. Find the total number of votes enrolled in that election.**

15600

12350

13420

16800

**Evaluate : ****28% of 450+ 45% of 280**

252

256

245

238