3
Q:

# 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 :

 A) 500/3 B) 700/3 C) 300 D) 600

Explanation:

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

$\inline&space;\left&space;[&space;\left&space;[&space;(x+100)\frac{1}{2}+100&space;\right&space;]\frac{1}{2}+100&space;\right&space;]\frac{1}{2}=\frac{x}{2}$

$\Rightarrow$    $\inline&space;x=\frac{700}{3}$

Q:

45% of 750  -  25% of 480 = ?

 A) 337.50 B) 217.50 C) 376.21 D) 120

Explanation:

Given expression = ($\inline \fn_jvn \small \frac{45}{100}$  x 750) - ($\inline \fn_jvn \small \frac{25}{100}$  x 480) = (337.50 - 120) = 217.50

1 4
Q:

What percent is 120 of 85 ?

 A) 133.33 % B) 141.17 % C) 145.54 % D) 139.29 %

Answer & Explanation Answer: B) 141.17 %

Explanation:

$\fn_jvn \small \frac{Px85}{100}=120$

=> p = 12000/85 = 141.17 %

1 31
Q:

A number increased by 30% gives 390. The number is

 A) 180 B) 300 C) 480 D) 260

Explanation:

Let the number be 'N'
Given N + 30N/100 = 390
=> 130N/100 = 390
=> N = 390 x 10/13
=> N = 300.

1 32
Q:

If 25% of a number is subtracted from a second number, the second number reduces to its four-sixth. What is the ratio of the first number to the second number  ?

 A) 4:3 B) 2:3 C) 3:2 D) 5:3

Explanation:

Let the numbers be p & q

q-p/4 = 4q/6

=> q-4q/6 = p/4

=> 2q/6 = p/4

=> p/q = 4/3

2 56
Q:

A number, when 35 is subtracted from it, reduces to its 80 percent. What is four - fifth of that number  ?

 A) 175 B) 140 C) 135 D) 95