The population of a city is 2500.if the number of males is 240 more than the number of females, how many makes and females are there in the city?

Question

It's solving systems using substitution

Answer 1

The population of a city is 2500.if the number of males is 240 more than the number of females, how many makes and females are there in the city?

Let M be the number of males

Let F be the number of females.

F + M = 2500         (The population of a city is 2500)

M = F + 240           (the number of males is 240 more than the number of females)

Substituting for M = F + 240 into the 1st equation,

F + (F + 240) = 2500

2F = 2500 - 240

2F = 2260

F = 1130

M = F + 240

M = 1370