Question

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4. An article bought for 350 is sold at a profit of 20%. Find its selling price.
5. An old machine is bought for 1,400 and is sold at a loss of 15%. Find its selling price.
6. Oranges are bought at 5 for 10 and sold at 6 for 15. Find profit or loss as percent
7. A certain number of articles are bought at 3 for 150 and all of them are sold at 4 for
180. Find the loss or gain as percent.​

Answer 1

Step-by-step explanation:

4.C.P. of article = Rs. 350

Profit = 20%

∴ S.P. = {C.P.(100 + Profit%)/100

= Rs. {350(100 + 20)}/100

= Rs.(350 × 120)/100

= Rs. 420

5.C.P. of the machine = Rs.1400

Loss = 15%

∴ S.P. = {C.P.(100 – Loss%)}/100

= {1400 (100 – 15)}/100

= Rs.(1400 × 85)/100

= Rs.1190

6.

Answer 2

Answer:

4. 420

5. 1190

6. 20%

7. -10%

Step-by-step explanation:

4. 350×.20(decimal form of 20%) = 70

350+70=420

5. 1400× .15(decimal form of 15%) = 210

1400-210 =1190