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Sam weighs 4 times as much as Andy and twice as much as John. The three boys weigh 147 kg altogether.

(a) How heavy is Andy?
(b) How heavy is Sam?​

Answer :

Answer:

A=21kg

J=42kg

S=84kg

Step-by-step explanation:

Anna's weight=A

Sams=S

Jons=J

S=4A A=S/4

S=2J J=S/2

substitute values

S+A+J=147

S+S/4+S/2=147

7S/4=147

S=84

A=84/4

=21

J=84/2

=42

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