3 years ago

Work out the value of x when X – 20 : x + 280 simplifies to 1:4

Mathematics

2 answers:

yaroslaw [1]3 years ago

3 0

Answer:

Solution for your question is X=120

jarptica [38.1K]3 years ago

3 0

Answer:

x = 120

Step-by-step explanation:

Express the ratios as equivalent fractions, that is

$\frac{x-20}{x+280}$ = $\frac{1}{4}$ ( cross- multiply )

4(x - 20) = x + 280

4x - 80 = x + 280 ( subtract x from both sides )

3x - 80 = 280 ( add 80 to both sides )

3x = 360 ( divide both sides by 3 )

x = 120

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marta [7]

Answer:

Step-by-step explanation:

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