Question
Find the value of x, when 2.5 : 4 = x : 7.5.
✓
Answer
$\begin{aligned} & 2.5: 4=x: 7.5 \\ & 4 \times x=2.5 \times 7.5 \\ & x=\frac{2.5 \times 7.5}{4} \\ & x=\frac{25 \times 75}{4 \times 100} \\ & x=\frac{75}{16}=4 \frac{11}{16}\end{aligned}$
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