Question

The sum of weight of A, B and C is $142.35$ kg. The sum of weight of A and B is less than weight of C by $5.45$ kg. Then find the weight of C.

• A. $74.3$ kg
• B. $72.9$ kg
• C. $73.9$ kg
• D. $73.3$ kg

Answer 1

The correct option is C $73.9$ kg

Total weight of A, B and C = $142.35$ kg
Weight of (A + B) = Weight of C - $5.45$ ........(1)
As given, A + B + C = $142.35$
∴ C = $142.35$ - (A + B)
Using equation (1)
C = $142.35$ - (C - $5.45$)
C = $142.35$ - C + $5.45$
C + C = $142.35$ + $5.45$
$2$C = $147.8$
$C$ = $73.9$
Weight of C = $73.9$ kg