__Question No. 01__

**A shopkeeper
sells one transistor for Rs. 840 at a gain of 20% and another for Rs. 960 at a
loss of 4%. His total gain or loss percent is:**

(A) 5 ^{15}*/*_{17} % loss

(B) 5 ^{15}*/*_{17} % gain

(C) 6 ^{2}*/*_{3} % gain

(D) None of
these

Answer:
Option

__Explanation:__

C.P. of 1^{st} transistor
= Rs. {(100/120) × 840} = Rs. 700

C.P. of 2^{nd} transistor
= Rs. {(100/96) × 960} = Rs. 1000

So, total
C.P. = Rs. (700 + 1000) = Rs. 1700

Total S.P. =
Rs. (840 + 960) = Rs. 1800

∴ Gain
% = {(100/1700) × 100} % = 5 ^{15}*/*_{17}
%

__Question No. 02__

**In a certain
store, the profit is 320% of the cost. If the cost increases by 25% but the
selling price remains constant, approximately what percentage of the selling
price is the profit?**

(A) 30%

(B) 70%

(C) 100%

(D) 250%

Answer:
Option B

__Explanation:__

Let C.P.=
Rs. 100. Then, Profit = Rs. 320, S.P. = Rs. 420

New C.P. =
125% of Rs. 100 = Rs. 125

New S.P. =
Rs. 420

Profit = Rs.
(420 - 125) = Rs. 295

∴ Required
percentage = {(295/420) × 100} % = (1475/21) % = 70% (approximately).

__Question No. 03__

**On selling
17 balls at Rs. 720, there is a loss equal to the cost price of 5 balls. The
cost price of a ball is:**

(A) Rs. 45

(B) Rs. 50

(C) Rs. 55

(D) Rs. 60

Answer:
Option D

__Explanation:__

(C.P. of 17
balls) - (S.P. of 17 balls) = (C.P. of 5 balls)

=> C.P. of 12 balls = S.P. of 17 balls
= Rs.720

=> C.P.
of 1 ball = Rs. (720/12) = Rs. 60

__Question No. 04__

**A vendor
bought toffees at 6 for a rupee. How many for a rupee must he sell to gain 20%?**

(A) 3

(B) 4

(C) 5

(D) 6

Answer:
Option C

__Explanation:__

C.P. of 6 toffees
= Re. 1

S.P. of 6
toffees = 120% of Re. 1 = Rs. 6/5

For Rs. 6/5,
toffees sold = 6

For Rs. 1,
toffees sold = {6 × (5/6)} = 5

__Question No. 05__

**A shopkeeper
expects a gain of 22.5% on his cost price. If in a week, his sale was of Rs.
392, what was his profit?**

(A) Rs.
18.20

(B) Rs. 70

(C) Rs. 72

(D) Rs.
88.25

Answer:
Option C

__Explanation:__

C.P. = Rs.
{(100/122.5) × 392} = Rs. {(1000/1225) × 392} = Rs. 320

∴ Profit
= Rs. (392 - 320) = Rs. 72

__Question No. 06__

**Sam
purchased 20 dozens of toys at the rate of Rs. 375 per dozen. He sold each one
of them at the rate of Rs. 33. What was his percentage profit?**

(A) 3.5

(B) 4.5

(C) 5.6

(D) 6.5

Answer:
Option C

__Explanation:__

Cost Price
of 1 toy = Rs. (375/12) = Rs. 31.25

Selling
Price of 1 toy = Rs. 33

So, Gain =
Rs. (33 - 31.25) = Rs. 1.75

∴ Profit
% = {(1.75/31.25) × 100} % = (28/5) % = 5.6%

__Question No. 07__

**When a plot
is sold for Rs. 18,700, the owner loses 15%. At what price must that plot be
sold in order to gain 15%?**

(A) Rs.
21,000

(B) Rs.
22,500

(C) Rs.
25,300

(D) Rs.
25,800

Answer:
Option C

__Explanation:__

Here, 85 :
18700 = 115 : *x*

=> *x* = (18700 × 115)/85
= 25300

Hence, S.P.
= Rs. 25,300.

__Question No. 08__

**If selling
price is doubled, the profit triples. Find the profit percent.**

(A) 66⅔

(B) 100

(C) 105 ^{1}*/*_{3}

(D) 120

Answer:
Option B

__Explanation:__

Let C.P. be
Rs. *x* and S.P. be Rs. *y*

Then, 3(*y* - *x*)
= (2*y* - *x*)

=> *y* =
2*x*

Profit = Rs.
(*y* - *x*) = Rs. (2*x* - *x*) =
Rs. *x*

∴ Profit
% = {(*x*/*x*) x 100} % = 100%

__Question No. 09__

**A man buys a
cycle for Rs. 1400 and sells it at a loss of 15%. What is the selling price of
the cycle?**

(A) Rs. 1090

(B) Rs. 1160

(C) Rs. 1190

(D) Rs. 1202

Answer:
Option C

__Explanation:__

S.P. = 85%
of Rs. 1400 = Rs. {(85/100) × 1400} = Rs. 1190

__Question No. 10__

**100 oranges
are bought at the rate of Rs. 350 and sold at the rate of Rs. 48 per dozen. The
percentage of profit or loss is:**

(A) 14 ^{2}*/*_{7} % gain

(B) 15 %
gain

(C) 14 ^{2}*/*_{7} % loss

(D) 15 %
loss

Answer:
Option A

**Explanation:**

C.P. of 1
orange = Rs. (350/100) = Rs. 3.50

S.P. of 1
orange = Rs. (48/12) = Rs. 4

∴ Gain%
= {(0.50/3.50) × 100} % = (100/7) % = 14 ^{2}*/*_{7} %

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