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Some book are to be shared between 2 schools A and B in the ratio of 4:7 if school B received 90 books more than school A, calculate

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cze3

Answer:

it is very easy so focus

Step-by-step explanation:

[tex] \frac{a}{b} = \frac{4}{7} [/tex]

b is more than a by 90

[tex] \frac{a}{a + 90} = \frac{4}{7} [/tex]

[tex]7a = 4a + 360[/tex]

[tex]3a = 360[/tex]

[tex]a = 120[/tex]

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