profit and loss Model Questions & Answers, Practice Test for ibps clerk prelims

Answer: (b)

C.P. = Rs. 450; profit = 20%

∴ S.P. = $(100 + 20)/100 × 450$ = Rs. 540

Let the list price of the wrist watch be Rs.x.

Then discount @ 10% = Rs. $x × 10/100$ = Rs. $x/10$

∴ S.P. = $x - x/10$ = Rs. $9/10x$

According to quesiton, ${9x}/10$ = 540

$x = {540 × 10}/9$ = Rs. 600

Answer: (c)

Let cost price = x

Then we have, $x(95/100)(110/100) = x(105/100) - 1$

or, $x = {100 × 100}/{105 × 100 - 95 × 100} × 200$

∴ Cost price = Rs. 200

Answer: (d)

Error in measurement = 100 – 80 = 20 cm

% gain = $(\text"Error"/\text"True value - Error" × 100) %$

% gain = $(20/{100 - 20}) × 100%$

= ${20 × 100}/80 %$ = 25%

Answer: (c)

Cost price of 1 apple = $240/80$ = Rs. 3

No. of apples give to his friend = $1/4$ × 80 = 20

Remaining apples = 80 – 20 = 60

Cost of apples to his friend = 20 × 3 = Rs. 60

Total SP at a profit of 20% = $240 × 120/100$ = Rs. 288

SP of remaining 60 apples = Rs. (288 – 60) = Rs. 228

SP of 1 apple = $228/60$ = Rs. 3.80

Answer: (c)

Short cut method :

Net profit = Profit +Discount + ${\text"Profit × Discount"}/100$

$25/2$ = 25 - Discount - ${25 × \text"Discount"}/100$

('–' to represent discount)

$25/2 - 25 = {- 5}/4$ Discount

∴ Discount % = 10%