If my dog and cat has a combine weight of 24kg and my rabbit and my dog has a combine weight of 20kg and my cat and rabbit has a combine weight of 10kg.whats the combine weight of my rabbit,dog and cat
2 answers
Please help with this one im totally confused
Eq1: D + C = 24kg
Eq2: D + R = 20kg
Eq3: C + R = 10kg
Subtract Eq2 from Eq1:
D + C = 24
D + R = 20
Diff: C-R = 4
R = C-4
In Eq3, replace R with C-4:
C + C-4 = 10
2C = 14
C = 7 kg
In Eq1, replace C with 7:
D + 7 = 24
D = 17 kg
R = C-4 = 7-4 = 3 kg
C + D + R = 7 + 17 + 3 = 27 kg.
Eq2: D + R = 20kg
Eq3: C + R = 10kg
Subtract Eq2 from Eq1:
D + C = 24
D + R = 20
Diff: C-R = 4
R = C-4
In Eq3, replace R with C-4:
C + C-4 = 10
2C = 14
C = 7 kg
In Eq1, replace C with 7:
D + 7 = 24
D = 17 kg
R = C-4 = 7-4 = 3 kg
C + D + R = 7 + 17 + 3 = 27 kg.
1 answer