Question
Anita tried her hands on selling a cake that she had
baked. She sold half of her cake at 20% profit, but seeing that cake would perish soon, sold half of the remaining cake at cost price. She had to sell the rest of the cake at 20% loss. What was her total percentage gain or loss?Solution
Let the weight of the cake be 1000 g which costed her Rs. 100 500 g at 20% profit ⇒ S.P = 60 250 g at cost price ⇒ S.P = 25 250 g at 20% loss ⇒ S.P = 20 ⇒ Total SP = Rs. (60 + 20 +25) = Rs. 105 Gain = 5%
 If 1.5x = 0.04y, then the value of
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