A man lost half of its initial amount in the gambling after playing 3 rounds. Th

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Question
A man lost half of its initial amount in the gambling after playing 3 rounds. The rule of gambling is that if he wins he will receive Rs. 100, but he has to give 50% of the total amount after each round.Luckily he won all the three rounds. The initial amount with which he had started the gambling was :
Options
A. 500/3
B. 700/3
C. 300
D. 600

Correct Answer

700/3

Explanation

Let the initial amount be x (with gambler), then

$[[(x + 100) \frac{1}{2} + 100] \frac{1}{2} + 100] \frac{1}{2} = \frac{x}{2}$

=> x = 700/3

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Percentage problems

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1. The current birth rate per thousand is 32, whereas corresponding death rate is 11 per thousand. The net growth rate in terms of population increase in percent is given by :
Options
A. 1.2 %
B. 2.1 %
C. 3.1 %
D. 1.3 %

2. 5/9 of the part of the population in a village are females. If 30 % of the females are married. The percentage of unmarried males in the total males is ?
Options
A. 62.5 %
B. 125 %
C. 84.32 %
D. 46.87 %

3. In an examination a candidate got 30% marks and failed by 30 marks. If the passing marks are 60% of the total marks, then the maximum marks will be:
Options
A. 450
B. 600
C. 300
D. 100

6. In a college, number of boys is 75% of number of girls. Difference between boys and girls is 35. On a particular day 20% boys were absent, then find the number of boys those who present?
Options
A. 72
B. 84
C. 93
D. 81

7. A seller charges 28% more from a customer as GST on an article. If customer paid Rs. 4544, what is the cost price of the article?
Options
A. Rs. 3550
B. Rs. 2650
C. Rs. 3840
D. Rs. 2450

8. A candidate got 35% of the votes polled and he lost to his rival by 2250 votes. How many votes were cast ?
Options
A. 7500
B. 6200
C. 5600
D. 4700

9. A restaurant offers a new promotion of 20% off the original price of cakes, which is Rs. 12. Before the promotion 250 cakes were sold each day. After the promotion, the sale of cakes increases an average of 18% more per day. How much more or less does the restaurant make each day in cakes sales after the promotion?
Options
A. Rs. 185 less
B. Rs. 202 more
C. Rs. 175 more
D. Rs. 168 less

10. In a factory there are three types of Machines M1 , M2 and M3 which produces 25%, 35% and 40% of the total products respectively. M1, M2 and M3 produces 2% , 4% and 5% defective products, respectively. What is the percentage of non-defective products?
Options
A. 89%
B. 97.1%
C. 96.1%
D. 86.1%

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