18
Q:

# From a salary of an officer, 10% is deducted as house rent, 15% of the rest he spend on children's education and 10% of the balance he spends on clothes. Then, he is left with Rs. 4131. Find his total salary?

Q:

What is better, to have 70% discount or 40 and 30% discount consequently ?

 A) 40% is better B) 70% is better C) Both are same D) None

Explanation:

Let Price be Rs.100

1st CASE:

Then 100 x 70/100 = 70
=> price after discount = 100-70 = Rs.30

2nd CASE:

Then 100 x 40/100 = 40
=> price after discount = 100-40 = Rs.60
then
60 x 30/100 = 18
=> price after 2 consequent discount = 60-18 = Rs.42

=>from 1 and 2 cases, 70% discount is better.

1 24
Q:

Prashanth sold a album for $735 and made a profit of 22.5% . The cost price of the album went up by$120 and so Prashanth increased the selling price by $120. What is his profit % now ?  A) 19.32 % B) 18.75 % C) 21.41 % D) 22 % Answer & Explanation Answer: B) 18.75 % Explanation: Prashanth sold a album for$ 735 and made a profit of 22.5% .
CP = 735 x 100/122.5 = Rs. 600
New CP = 600 + 120 = Rs. 720
New SP = 735 + 120 = Rs. 855.

Profit = Rs. 135.

profit % = 100 x 135/720 = 18.75%.

1 16
Q:

Value of vehicle at end of each year depreciates at the rate of 3/5th of value at the beginning. If Initial value is 10,000Rs then at the end of three years its value is ?

 A) Rs. 6000 B) Rs. 3600 C) Rs. 2160 D) Rs. 415

Explanation:

End of first year     :  10000 x (3/5) = Rs. 6000
End of second year :  6000 x (3/5) = Rs. 3600
End of third year    :  3600 x (3/5) = Rs. 2160

1 22
Q:

Tanks A and B are each in the shape of a right circular cylinder. The interior of tank A has a height of 10 meters and a circumference of 8 meters, and the interior of tank B has a height of 8 meters and a circumference of 10 meters. The capacity of tank A is what percent of the capacity of tank B ?

 A) 76% B) 72% C) 80% D) 82%

Explanation:

circumference of A = $\inline \fn_jvn \small 2\prod r$ = 8 => so r = $\inline \fn_jvn \small \frac{4}{\prod }$
volume = $\inline \fn_jvn \small \prod x\left ( \frac{4}{\prod }\right )^{2}x10$ = $\inline \fn_jvn \small \frac{160}{\prod }$
circumference of B = $\inline \fn_jvn \small 2\prod r$  = 10 => so r = $\inline \fn_jvn \small \frac{5}{\prod }$
volume = $\inline \fn_jvn \small \prod x\left ( \frac{5}{\prod }\right )^{2}x8$ =  $\inline \fn_jvn \small \frac{200}{\prod }$
so ratio of capacities = 160/200 = 0.8
so capacity of A will be 80% of the capacity of B.

2 32
Q:

An individual deposited 20% of 25% of 30% of what he had into his account with a bank. If he deposited Rs.750, how much was he having initially with him before depositing ?

 A) Rs. 38000 B) Rs. 47000 C) Rs. 50000 D) Rs. 35000