Question

Pls solve it guys


correct answer will be brainlist​

Answer 1

Answer:

31 kg

Step-by-step explanation:

A + B + C = 45 * 3 ⇒ A+ B + C = 135 kg ---------(i)

A + B = 40 * 2 ⇒ A + B = 80 kg --------- (ii)

B + C = 43 * 2 ⇒ B + C = 86 kg----------(iii)

Add (ii) and (iii)

A + 2B + C = 166 ------(IV)

(iv) - (i)

B = 166 - 135 = 31 kg

HOPE IT HELPS YOU

PLEASE MARK ME AS THE BRAINLIEST

Answer 2

Answer: b = 31 kg

Step-by-step explanation: according to question

a + b/2 = 40

a +b = 80 (1)

and

b + c/2 = 43

b + c = 86 (2)

and

a + b + c/3 = 45

a + b + c = 135

a + b = 135 - c (3)

from (1) and (3)

135 - c = 80

c = 55 (4)

put (4) in (2)

b + 55 = 86

b = 31 kg