Question

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A number when multiplied by 4 is increased by 54. The number is

(a) 21
(b) 16
(c) 18
(d) 19

Answer 1

$$\begin{gathered} \left(\mathrm{c}\right)18 \\ \begin{array}{l}\text{Let the number be}x.\\ \text{According to the question, we have:}\\ \text{4}x=x+\text{54}\\ \Rightarrow \text{3}x=\text{54}\\ \Rightarrow x=\text{18}\end{array} \end{gathered}$$