Question

sold two articles at rupees 840 on Varshi gains 20% and on the other He loses 20% How much does she gain or loss in the whole transaction also find the gain or loss percent in the whole transaction​

Answer 1

Answer:

Step-by-step explanation:

SP = Rs. 840

if gain = 20%

gain% = (SP-CP)/CP * 100

⇒ 20= (840-CP)/CP * 100

⇒ 20/100 = (840-CP)/CP

⇒ 0.20CP = 840 - CP

⇒ 0.20CP + CP = 840

⇒ CP = 840/1.2 = Rs. 700

if loss = 20%

loss% = (CP-SP)/CP * 100

⇒ 20 = (CP-840)/CP * 100

⇒ 20/100 = (CP-840)/CP

⇒ 0.20CP = CP - 840

⇒ CP - 0.20CP = 840

⇒ CP = 840/0.8 = Rs. 1050

Total CP = 700+1050 = 1750

Total SP = 840+840 = 1680

loss = 1750- 1680= Rs. 70

loss% = loss/CP * 100 = 70/1750 * 100=4%.