1.

Sonal bought a mobile phone and sold it for Rs. 360 and earns a profit of 20%. Find her cost price?1). Rs. 288 2). Rs. 3063). Rs. 3004). Rs. 298

Answer»

Given,

SP = 360

⇒ Profit = 20%

LET the CP be A

⇒ Profit = [(SP - CP)/CP] × 100

⇒ 20 = [(360 - A)/A] × 100

⇒ (20/100) = (360 - A)/A

⇒ A/5 = 360 - A

⇒ A = 300


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