Question

7. If 2A = 3B and 4B = 5C, then A: C =
A​

Answer 1

$\sf 3B = 2A$

$\sf B = \frac{2A}{3}$

$\sf 4B = 5C$

$\sf 4 \times \frac{2A}{3}= 5C$

$\sf \frac{8A}{3} = 5C$

$\sf \frac{A}{C} = \frac{5 \times 3}{8}$

$\sf \frac{A}{C} = \frac{15}{8}$

$\sf \therefore~{\underline{\underline{A:C=15:8}}}$