**Q1:**

A man sold an article for Rs.450 at a loss of 10%.At what rate should it be sold to earn a profit of 10%

* Ans:* 450 x 110 / 90 =550 rs

**Q2:**

A man sold an article for Rs.240 at a loss of 40%.At what rate should it be sold to earn a profit of 10%

* Ans:* 240 x 110 / 60 =440 rs

**Q3:**

A man sold a bag for Rs.280 at a loss of 30 %.At what rate should it be sold to earn a profit of 20%

* Ans:* 280 x 120 / 70=480 rs

**Q4:**

A machine is sold at 20% profit.Had it been sold at 25% profit it would have increased 40 rs.Find the cost price of the machine?

* Ans:* 25% - 20% = 5%

5% = 40 rs

Cost price is always 100%.

So cost price = 40 x 100/5

= 800 rs

**Q5:**

A watch is sold at 40% profit.Had it been sold at 47% profit it would have increased 490 rs.Find the cost price of the machine?

* Ans:* 40% - 47% = 7%

7% = 490 rs

Cost price is always 100%.

So cost price = 490 x 100/7

= 700 rs

**Q6:**

A machine is sold at 11% profit.Had it been sold at 20% profit it would have increased 81 rs.Find the cost price of the machine?

* Ans:* 20% - 11% = 9%

9% = 81 rs

Cost price is always 100%.

So cost price = 81 x 100/9

= 900 rs

**Q7:**

If the selling price of a chair is increased by 35 rs ,the profit is increased by 7%.Find cost price?

* Ans: *35 x 100/7 = 500 rs

**Q8:**

A machine is sold at 10% loss.Had it been sold at 15% profit it would have increased 50 rs.Find the cost price of the machine?

* Ans:* 10% + 15% = 25%

25% = 50 rs

Cost price is always 100%.

So cost price = 50 x 100/25

= 200 rs

**Q9:**

A cycle is sold at 20% loss.Had it been sold at 10% profit it would have increased 300 rs.Find the cost price of the cycle?

* Ans:* 20% + 10% = 30%

30% = 300 rs

Cost price is always 100%.

So cost price = 300 x 100/30

= 1000 rs

**Q10:**

A book is sold at 20% loss.Had it been sold at 20% profit it would have increased 400 rs.Find the cost price of the book?

* Ans:* 20% + 20% = 40%

40% = 400 rs

Cost price is always 100%.

So cost price = 400 x 100/40

= 1000 rs

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