In 1990, The Population Of Brgy A Was 3,250 While The Brgy B Was 1,730. In 1997, Brgy A Had 3900 People. If The Same Ratio Remade. What Was The Popula

In 1990, the population of brgy A was 3,250 while the brgy B was 1,730. In 1997, brgy A had 3900 people. If the same ratio remade. What was the population?

  Let a be the unknown population of brgy B
\frac{3250}{1730} \times \frac{3900}{a} \\ \\3250(a) = (3900)(1730) \\ 3250a = 6747000 \\ a = 2076

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