Question

If $\frac{45}{60}$ is equivalent to $\frac{3}{x}$ then the value of x is
(a) 4
(b) 5
(c) 6
(d) none of these

Answer 1

(a) 4

Explanation:
$$\begin{gathered} \left(\frac{45}{60}=\frac{3}{\mathrm{x}}\right) \\ \mathrm{Now},3=45÷15 \\ \mathrm{So},\mathrm{we}\mathrm{have}\mathrm{to}\mathrm{divide}\mathrm{the}\mathrm{denominator}\mathrm{by}15. \\ \therefore x=60÷15=4 \end{gathered}$$