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Alan is \(2 {1 \over 2}\frac{}{}\)times as heavy as Binod. Binod is 7 kg lighter than Glen. The total mass of the 3 boys is 142 kg. What is Glen's mass?

 Aug 23, 2021
edited by Whayousayy  Aug 23, 2021
 #1
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a = 2.5 b      

g = b-7

b                             summed = 142

 

2.5b      +    b-7    +    b   = 142      solve for b...    then         g = b-7

 Aug 23, 2021
 #2
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A = 2.5(G-7)

 

B = G-7

 

G = G  (laugh)

 

2.5(G-7) + G-7 + G = 142

 

G => 37 kg

 

A => 75 kg

 

B => 30 kg

Guest Aug 23, 2021
 #3
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a = 2.5 b      

b = g-7           so   a = 2.5 (g-7)

g                         summed = 142

 

2.5(g-7)     +    g-7    +    g   = 142      solve for g...                 *** edited ***

Guest Aug 23, 2021

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