The population of a city is 25,000. if the number of males is 240 more than the number of females, how many males and females are there in the city?

To solve you start by dividing 25,000 in half. This gives you 12,500. Then you subtract 240 from it to find the number of females (12,260). Finally you subtract 12, 260 from 25,000 to find the number of males.

So there are 12,260 females and 12,740 males

M=f+240

m+f=25000, using m from above in this equation gives you:

f+240+f=25000 combine like terms on left side

2f+240=25000 subtract 240 from both sides

2f=24760 divide both sides by 2

f=12380, and since m=f+240

m=12620

So there are 12620 males and 12380 females in the city.