Question

find the value of x in each of the following proportions (show process)
5:7= 20 : x

Answer 1

Answer:

$\huge \pink \to \huge \mathfrak \orange{answer}$

$5 \ratio7 = 20 \ratio \: x \\ \Rightarrow \: cross \: multiplication \\ \Rightarrow5x = 7 \times 20 \\ \Rightarrow5x = 140 \\ \\ \Rightarrow \: x = \frac{140}{5} \\ \\ \huge \red {x = 28}$

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