Using trick,

Percentage loss in his salary = 35 x 35/100

= 12.25%

By using the formula,

B's age is more than A's age by P/(100 - P) x 100.

 = 15/(100 - 15) x 100 = 17.65%

By using trick,

Q is less than by P = P/(100+P)x100  

Q’s earning is less than P = 40/(100 + 40) x 100

= 28.6%

Let the required number be x. Then, 

X x 30/100 = 114 = 380

Now, 20% of 380 = (380x20)/100 = 76

Increase in consumption = P/(100-P)x100

Increment in consumption = 35/(100 - 35) x 100 = 53.85%

Let original consumption = c Let initial price = p Let Initial expenditure = e e = pc...(i) Let final consumption = k New price = 1.1.25p e = 1.125 pk....(ii) Equating (i) and (ii), we get pc = 1.125pk or k = c/1.125 = 0.8888c Thus, reduction = (100 - 88.88)5 = 11.11 % Hence, option 2 is correct.

Difference in % = Difference in marks

34% - 30% = 4%

4% = 18 marks

So, total marks = (18 x 100)/4 = 450

Let the original selling price of each chair = Rs. X and number of chairs = y

Then, original selling price of y chairs = xy

So, x*y = xy

On reducing price by 5% and increasing number of chairs by 12%,

(95x/100)*(112y/100) = 1064xy/1000,

So, increase in selling price = 1064xy/1000 – xy

= 64xy/100

Percentage increase in selling price = 64xy*100/1000*xy

= 6.4%

Let the first number = x and other number = y

So, x*30/100 = y*31/100

x/y = 31/30 

x : y = 31 : 30

So, the required ratio is 31 : 30.

Let the original number of apples = x

Number of sold apples = 75x/100 

Now, the remaining number of apples = x – 75x/100 = 25x/100

So, 25x/100 = 225 

X = 900

So, the original number of apples is 900.

Let the number = x, then

25% of x - 20% of x = 26

5% of x = 26

x*5/100 = 26

x = 520

Now, 3/4 of 520 = 520*3/4 = 390

For two successive changes of x% and y%, net change = {x + y +xy/100}%

= {- 34 – 35 + (- 34)(- 35)/100}%

=(- 69 + 11.9) % = - 57.1%

So, equivalent discount is 57.1%.

If marks of both students are 130 and 110,

Then, difference of marks = 130 - 110 = 20

But required difference is 24, so it is a wrong answer.

Let the total amount A had be Rs. x.

Then, remaining amount = x - (55% + 32%) of x

= 13x/100 

So, 13x/100 = 3315 

x = 25500

So, the total amount A had was Rs. 25500.

Price of the car = Rs. 435000

Car is insured to 80% of its price.

Insured price = 435000 × 80/100 = Rs. 348000

Insurance company paid 95% of the insurance. 

Amount paid by insurance company = Insured price × 95/100

= 348000*95/100

= 330600

Difference between the price of the car and the amount received = Rs. 348000 - Rs. 330600 = Rs. 17400