Question

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Answer 1

HOLA CHICO

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$mn \: \: || \: ab \\ \\ \frac{am}{ac} \: = \: \: \frac{bn}{bc} \: \: by \: bpt \\ \\ \\ \frac{mc}{am \: + \: mc} = \: \frac{bn}{7.5} \\ \\ \frac{2}{4 \: + \: 2} = \: \frac{x}{7.5} \\ \\ \: \frac{2 \: \times \: 7.5}{6} = \: 2.5 \\ \\ ( \: 7.5 \: - \: 2.5 \: ) \: = \: 5 \\ \\ bn \: = \: 5$

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HOPE U UNDERSTAND

Answer 2

MC/AM+MC=NC/BC=1/3=NC/7.5
NC=2.5
BN=BC-AC
=5ans