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WAEC 2022 · Paper 1 · Q48

A trader made a loss of 15%15\% when an article was sold. Find the ratio of the selling price to the cost price.

Worked solution (try it first)
  1. A 15%15\% loss means the selling price is 100%−15%=85%100\% - 15\% = 85\% of the cost price.
  2. So selling price : cost price =85:100= 85 : 100.
  3. Divide both by 5: 17:2017 : 20, option C.

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