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Question
Solve: 2x + 20% of x = 12.1
Solution
2x + 20% of x = 12.1
⇒ 2x + `("x" xx (20))/100 = 12.1`
⇒ 2x + `"20x"/100 = 12.1`
⇒ 2x + `"2x"/10 = 12.1`
`("20x + 2x = 121")/10`
⇒ 22x = 121
⇒ x = `121/22 = 11/2`
∴ x = `11/2` or `5 1/2`
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