0
Q:

A Shopkeeper  charges sales tax of x% upto Rs.2,000 and above it he charges y%. A customer pays total tax of Rs 320, when he purchases the goods worth Rs. 6,000 and he pay's the total tax of Rs. 680 for the goods worth Rs. 12,000. The value of (x-y) is:

 A) 0 B) -2 C) -4 D) 5

Explanation:

$\inline&space;2000\times&space;\frac{x}{100}+4000\times&space;\frac{y}{100}=320$

and     $\inline&space;2000\times&space;\frac{x}{100}+10,000\times&space;\frac{y}{100}=680$

$\therefore$        x = 4  and  y = 6

$\therefore$         x-y = -2

Q:

What percent is 120 of 85 ?

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

Explanation:

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

=> p = 12000/85 = 141.17 %

1 7
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 9
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 35
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

Explanation:

x - 35 = 80x/100

=> x = 175

=> 4x/5 = 4x175/5 = 140.

3 43
Q:

5% people of a village in India died by dengue, 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) 4400 B) 3100 C) 2800 D) 5600