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Town A and Town B were located close to each other, and recently merged into one city. Town A had a population with 6% Hispanics. Town B had a population with 12% Hispanics. After the merge, the new city has a total of 4800 residents, with 10.5% Hispanics. How many residents did Town A and Town B used to have?

 Feb 16, 2020
 #1
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Let town A population =A

Let town B population =B

 

A + B = 4,800........................................(1)

0.06A + 0.12B =4800 * 0.105..............(2)

Use substitution to get:

 

A =1,200 - population of town A

B =3,600 - population of town B

 Feb 16, 2020

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