model 2 gain lost percentage Section-Wise Topic Notes With Detailed Explanation And Example Questions

MOST IMPORTANT quantitative aptitude - 11 EXERCISES

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The following question based on profit & loss topic of quantitative aptitude

Questions : The cost price of 15 articles is same as the selling price of 10 articles. The profit percent is :

(a) 30%

(b) 40%

(c) 45%

(d) 50%

The correct answers to the above question in:

Answer: (d)

Suppose the C.P. of each article is Rs.1

Then C.P. of 10 articles = Rs.10

S.P. of 10 articles = Rs.15

Profit = Rs.5

% profit = ${5 × 100}/10$ = 50%

Using Rule 8,

Here, x = 15, y = 10

Profit% = ${x - y}/y × 100$

= $({15 - 10}/10) × 100$ = 50%

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Read more gain lost percentage Based Quantitative Aptitude Questions and Answers

Question : 1

If the cost price of 10 articles is equal to the selling price of 8 articles, then gain per cent is

a) 10%

b) 8%

c) 25%

d) 50%

Answer: (c)

Profit percent = ${10 - 8}/8 × 100$ = 25%

Using Rule 8,

Here, x = 10, y = 8

Gain % = $({x - y}/y) × 100$

= ${10 - 8}/8 × 100 = 200/8$ = 25%

Question : 2

The selling price of 12 articles is equal to the cost price of 15 articles. The gain per cent is

a) 6$2/3$%

b) 20%

c) 80%

d) 25%

Answer: (d)

Gain per cent = ${15 - 12}/12 × 100$ = 25%

Using Rule 8,

Here, x = 15, y = 12

Gain % = $({x - y}/y) × 100$

= ${15 - 12}/12 × 100 = 3/12 × 100$ = 25%

Question : 3

A cloth merchant on selling 33 metres of cloth obtains a profit equal to the selling price of 11 metres of cloth. The profit percent is

a) 40%

b) 22%

c) 11%

d) 50%

Answer: (d)

S.P. of 33 metres of cloth

= C.P. of 33 metres of cloth +

S.P. of 11 metres of cloth

S.P. of 22 metres of cloth

= C.P. of 33 metres of cloth

Gain per cent = ${33 - 22}/22 × 100$ = 50%

Using Rule 9,

Here, x = 33, y = 11

Profit % = ${y × 100}/{x - y}$

= ${11 × 100}/{33 - 11} = {11 × 100}/22$ = 50%

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