# Exercise :: 1

(b) 25%

(c) 2163%

(d) Data inadequate

(e) None of these

**Ans.a**

Percentage profit= \(\frac{2}{12 - 2} \times 100 = 20 \%\)

^{1}/

_{3}% profit on the cost price?

(b) 20.00

(c) 18.40

(d) 17.40

(e) None of these

**Ans.c**

CP= 20 ×15 + 30 ×13 = 690

\ sp = ^{4}⁄_{3} of 690 × ^{1}⁄_{50} = 18.40

(b) 75.00

(c) 70.00

(d) 68.00

(e) None of these

**Ans.a**

Let the cost price of the article be x.

Then,2(84 –x) = 96 – x

l68 – 2x= 96 – x \ x = 72

(b) 36.4 %

(c) 24.8 %

(d) Can’t be determined

(e) None of these

**Ans.e**

If no discount is given,selling price of TV

= 17940 × ^{100}⁄_{92} = 19500

Cost price of TV = \(17940 \times \frac{100}{119.60}\) 15000

Gain % = \(\frac{19500 - 15000}{15000}\times 100\) 30 %

(b) 275

(c) 117.85

(d) Cannot be determined

(e) None of these

**Ans.a**

List price of calculator

\(\frac{82.50}{30}\times 100\) = 275Deepa bought calculator in

275 × 0.70 = 192.50

^{7}⁄

_{9}

(b) 22

^{7}⁄

_{9}

(c) 25

^{7}⁄

_{9}

(d) Data inadequate

(e)None of these

**Ans.a**

Original selling price of TV set

=\(\frac{16560 \times 100}{90}\) = 18400

Cost price of the TV = \(\frac{16560 \times 100}{115}\) = 14400

at no discount, % profit will be

= \(\frac{\left ( 18400 - 14400 \right ) \times 100}{14400}\) = \(27 \tfrac{7}{9}\)

(b) 100000

(c) 500000

(d) 2000000

(e) None of these

**Ans.e**

We do not know the total investment of builder,because in the question construction cost is not given.

Hence,‘None of these’ is the answer.

(b) 48%

(c) 96%

(d) 100%

(e) None of these

**Ans.a**

Purchase price = 480

Repair cost = 20% of 480 = 96

∴ Total cost =480 + 96 = 576

Net profit = 144

∴ Selling price = Total cost + Net

profit= 576 + 144 = 720

Now, Selling price - Purchase price

= 720 – 480 = 240

∴ Reqd percentage = ^{240}⁄_{280} × 100 = 50%

(b) 4,800

(c) 1,200

(d) Cannot be determined

(e) None of these

**Ans.a**

Let the price of one saree and one shirt be x and y respectively.

Then, 2x + 4y = 1600

or, x + 2y = 800 ... (i)

Also, x + 6y = 1600 ... (ii)

Solving equations (i) and (ii), we get

4y = 800 or,y = 200

∴ cost of 12 shirts = 12 × 200 = 2400

(b) 14%

(c) 15%

(d) 16%

(e) None of these

**Ans.b**

CP of 150 calculators = 150 × 250 = 37,500.

\ total CP = 37,500 + 2500 = 40,000

Marked price of 150 calculators = 150 × 320 = 48,000

Selling price after discount = 4800 × ^{95}⁄_{100}

= 45,600

\ Percentage profit = \(\frac{45,600 - 40,000}{40,000}\times 100\) = 14%