**611. There were two candidates in an election. Winner candidate received 62% of votes and won the election by 288 votes. Find the number of votes casted to the winning candidate?**

A. 456**B. 744**

C. 912

D. 1200

**Explanation:**

W = 62% L = 38%

62% – 38% = 24%

24% ——– 288

62% ——– ? => 744

**612. If population of certain city increases at the rate of 5%. If population in 1981 was 138915, then population in 1978 was__________?****A. 1,20,000**

B. 1,10,000

C. 1,00,000

D. 90,000

**Explanation:**

X * (105/100) * (105/100) * (105/100) = 138915

X = 138915/1.157625

X = 120000

**613. At an examination in which full marks were 500. A got 10% less than B, B got 25% more than C and C got 20% less than D. If A got 360 marks, what percentage of full marks was obtained by D?**

A. 70%

B. 90%**C. 80%**

D. 75%

**Explanation:**

A B C D

90 100 80 100

A D

90 —– 100

360 —— ? = 400

500 —— 400

100 ——- ? => 80%

**614. The tax on a commodity is diminished by 20% but its consumption is increased by 10%. Find the decrease percent in the revenue derived from it?**

A. 20%

B. 18%

C. 15%**D. 12%**

**Explanation:**

100 * 100 = 10000

80 * 110 = 8800

10000——- 1200

100 ——- ? = 12%

**615. The amount of water (in ml) that should be added to reduce 9 ml. Lotion, containing 50% alcohol, to a lotion containing 30% alcohol, is__________?**

A. 3

B. 4

C. 5**D. 6**

**Explanation:**

4.5 4.5

30% 70%

30% —– 4.5

70% ——? => 10.5 – 4.5 = 6 ml

**616. A mixture of 70 liters of wine and water contains 10% water. How much water must be added to make water 12 ½% of the total mixture?**

A. 12 liters

B. 10 liters

C. 4 liters**D. 2 liters**

**Explanation:**

70 * (10/100) = 7

Wine Water

87 1/2% 12 1/2%

87 1/2% ——- 63

12 1/2% ——-? => 9-7=2

**617. In a factory, there are 40% technicians and 60% non-technicians. If the 60% of the technicians and 40% of non-technicians are permanent employees, then the percentage of workers who are temporary is________?**

A. 32%

B. 42%**C. 52%**

D. 62%

**Explanation:**

Total = 100

T= 40 NT= 60

40*(60/100)=24 60*(40/100)=24

24 + 24 = 48 => 100 – 48 = 52%

**618. 5% people of a village in Sri Lanka died by bombardment, 15% of the remainder left the village on account of fear. If now the population is reduced to 3553, how much was it in the beginning?**

A. 3800

B. 4200**C. 4400**

D. 5500

**Explanation:**

X * (95/100) * (85/100) = 3553

X = 4400

**619. A salesman’s terms were changed from a flat commission of 5% on all his sales to a fixed salary of Rs.1000 plus 2.5% commission on all sales exceeding Rs. 4,000. If his remuneration as per new scheme was Rs. 600 more than that by the previous schema, his sales were worth?**

A. Rs. 14,000**B. Rs. 12,000**

C. Rs. 30,000

D. Rs. 40,000

**Explanation:**

[1000 + (X-4000) * (2.5/100)] – X * (5/100) = 600

X = 12000

**620. A and B’s salaries together amount to Rs. 2,000. A spends 95% of his salary and B spends 85% of his. If now their savings are the same, what is A’s salary?**

A. Rs.500

B. Rs.750

C. Rs.1250**D. Rs.1500**

**Explanation:**

(5/100) A = (15/100) B

A = 3B

A + B = 2000

4B = 2000 => B = 500

A = 1500