34
Q:

# A, B and C invest in the ratio of 3 : 4: 5. The percentage of return on their investments are in the ratio of  6 : 5 : 4. Find the total earnings, If B earns Rs. 250 more than A :

 A) Rs. 6000 B) Rs. 7250 C) Rs. 5000 D) None of these

Explanation:

A                  B                   C

investment                    3x                 4x                  5x

Rate of return              6y%              5y%                4y%

Return                           $\inline&space;\frac{18xy}{100}$             $\inline&space;\frac{20xy}{100}$             $\inline&space;\frac{20xy}{100}$

Total = (18+20+20) = $\inline&space;\frac{58xy}{100}$

B's earnings - A's earnings  = $\inline&space;\frac{2xy}{100}$ = 250

Total earning = $\inline&space;\frac{58xy}{100}$ = 7250

Q:

Watson bought a book for Rs. 240 and sold to Johny at a profit  of 50%. Johny wants to sell this book to Shekar so that he earns a profit of 25%. But Shekar is adamant at buying this book at a discount of 10%. What marked price should Johny quote to Shekar so as to achieve desired profit ?

 A) Rs. 450 B) Rs. 360 C) Rs. 415 D) Rs. 500

Explanation:

Watson bought the book for Rs. 240 and sold to Johny at a profit of 50%.

S.P = C.P(1 + P%/100)

=> S.P for Watson = C.P for Johny = 240(1 + 50/100) = 240 x 1.5 = Rs. 360

Let Johny quoted the marked price of the book as Rs. M

We know, SP = M.P(1 - Discount(%)/100)

Here discount = 10% to Shekar,

S.P for Johny = M(1 - 10/100) = 0.9M

But Johny want to earn 25% profit,

=> S.P = C.P(1 + P%/100)

=> 0.9M = 360(1 + 25/100)

=> M = (360x1.25)/0.9

=> M = Rs. 500

Therefore, Johny should quote Rs. 500 as the marked price of the book to get 25% profit and allowing 10% discount to Shekar.

1 0
Q:

Raju sold an article by giving a discount of 8% for Rs. 17,940 and earn profit of 19.6 %. If he did not give discount then how much profit percentage he gets ?

 A) 27% B) 30% C) 32% D) 25%

Explanation:
Let the M.R.P of an article be 100 %

Selling price of article =Rs. 17940

If he give a discount of 8 % then S.P = 92 %
92 % = 17490
100 % = 19500

Now C.P of the article is

17490 x 100/119.6 = 15000

If he did not give the discount, then

Required profit percentage =

7 185
Q:

12 days payment to the servant in a cloth showroom in festival season is Rs. 400 plus one shirt. The servant leaves after 9 days and recieves Rs. 280 and a shirt. What is the price of the shirt ?

 A) Rs. 80 B) Rs. 120 C) Rs. 70 D) Rs. 100

Explanation:

The servant worked for 9 days instead of 12 days, he should receive 9/12 of his total payment

Let the price of 1 shirt be Rs. S

i.e., 3/4 (400 + S).

However, the question states that the servant receive Rs. 280 + S where S is the price of the shirt.

By equating the two equations we get 3/4 (400 + S) = 280 + S.

Therefore, Price of the shirt S = Rs. 80.

12 220
Q:

A man sold two flats for Rs. 4.15 lakhs each. On one he gained 2% and on the other he lost 2%. What percent is the effect of the sale on the whole  ?

 A) 0.25 % B) 0.04 % C) 0.5 % D) 0 %

Explanation:

In this type cases we always have loss only.

Loss% = $\inline \fn_jvn \left ( \frac{common gain or loss percent}{10}\right )^{2}$ = $\inline \fn_jvn \left ( \frac{2}{10}\right )^{2}$ = 1/25 = 0.04 %

7 294
Q:

The cost price of an article is 54% of the marked price. Calculate the gain percent after allowing a discount of 15%  ?

 A) 51.32 % B) 49.23 % C) 48.4 % D) 46.8 %