**551. The Price of an article is cut by 10%. To restore it to the former value, the new price must be increased by_______?**

A. 10 %

B. 9 1/11 %**C. 11 1/9 %**

D. 11%

**Explanation**

Let original price = Rs. 100

Then new price = Rs. 90

Increase on Rs. 90 = Rs. 10

Increase % = [10/90 X 100] % = 11 1/9 %

**552. What percentage of numbers from 1 to 70 have squares that end in the digit 1?**

A. 1

B. 14**C. 20**

D. 21

**Explanation:**

Clearly, the numbers which have 1 or 9 in the unit’s digit, have squares that end in the digit 1. Such numbers from 1 to 70 are 1, 9, 11, 19, 21, 29, 31, 39, 41, 49, 51, 59, 61, 69.

Number of such numbers = 14.

Required percentage = (14/70 * 100) = 20%

**553. The number which exceeds 16% of it by 42 is________?****A. 50**

B. 52

C. 58

D. 60

**Explanation:**

Let the number be x.

Then, x – 16% of x = 42.

x – 16/100 x = 42

x = (42 * 25)/21 = 50

**554. The temperature at noon in LHR ,Pakistan was 6 deg on Monday ,4deg on Tuesday,2deg below zero on Wednesday,3deg below zero on Thursday, 0 deg on Friday ,3 deg on Saturday ,and 6 deg on Sunday. What was the average temperature at noon for the week ?**

A. 14 deg**B. -2 deg**

C. 2 deg

D. 7 deg

**555. In a class of 120 students , 45 students received a grade of B.What percent of the class received a grade of B ?**

A. 75 %

B. 25.6 %**C. 37.5%**

D. 18.5%

**556. A company has 7348 bars of soap. If the company sells 20% of its bars of soap .how many bars of soap did it sell?**

A. 734.8**B. 1469.6**

C. 146950

D. 29390

**557. If eggs cost $.06 each ,how much should a dozen eggs cost ?**

A. .56

B. $ .80**C. $ .72**

D. $.60

**558. If 20 teachers out of a faculty of 80 are transferred, what percentage of the original faculty remains ?**

A. 4

B. 16

C. 60**D. 75**

**559. The average of two numbers is XY.If one number is equal to X ,the other number is equal to_________?**

A. X

B. 2Y

C. XY-X**D. 2 XY -2 X**

**560. If 35% of a number is 12 less than 50% of that number, then the number is_________?**

A. 40

B. 50

C. 60**D. 80**

**Explanation:**

Let the number be x. Then,

50% of x – 35% of x = 12

50/100 x – 35/100 x = 12

x = (12 * 100)/15 = 80.