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drek231 [11]
3 years ago
10

In little Marsden the population is 17 222. The men and women together total 9142 and the women and children together total 13 2

01.
There are ...... Women
There are ...... Men
There are ...... Children
Mathematics
2 answers:
stich3 [128]3 years ago
8 0
A = Children
b = men
c = women

a + b + c = 17 222
b + c = 9142
a + c = 13 201

To find a we will minus b + c from 17 222.
a + b + c = 17 222
a + (9142) = 17 222
a + 9142 (- 9142) = 17 222 (- 9142)
<u>a = 8080
</u>
To find c we will take the equation " a + c = 13 201 " and substitute a to "<u>a = 8080"
</u>a + c = 13 201 
(8080) + c = 13 201
8080 (-8080) + c = 13 201 (-8080)
<u>c = 5121</u>

And then to find b we will take the equation " a + b + c= 17 222 " and substitute 'a' and 'c' for their solved numbers.
a + b + c = 17 222
(8080) + b + (5121) = 17 222
b + (13201) = 17 222
b + 13201 (-13 201) = 17 222 (-13 201)
<u>b = 4021</u>

And to check answer we will substitute all variable for their found answers.
a + b + c = 17 222
(8080) + (4021) + (5121) = 17 222

Children = 8080
Men = 4021
Women = 5121

Tada! haha 

Hope that helps. For these questions, it's a good idea to write them out as I did in the beginning to get a feel for them....

 a + b + c = 17 222
b + c = 9142
a + c = 13 201

and then try to isolate and solve one variable and then go from there. :D

<u>
</u>


yawa3891 [41]3 years ago
3 0
M + W = 9142
W + C = 13201
Population: 17222
17222 - 13201  (W + C) = 4021
4021 = Men

M + W = 9142
so 9142 - 4021 = 5121 = Women

And W + C = 13201
so 13201 - 5121 = 8080

Check: 8080 + 5121 + 4021 = 17222
Happy to Help!
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