Answered

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Two​ trains, Train A and Train​ B, weigh a total of472 tons. Train A is heavier than Train B. The difference of their weights is 408 tons. What is the weight of each​ train?

Sagot :

lilethnguyen

Answer:

Train A weighs 440 tons

Train B weighs 32 tons

Step-by-step explain

[tex]\left \{ {{A +B=472} \atop {A-B=408}} \right.[/tex]

[tex]\left \{ {{A+B=472} \atop {A=408 + B}} \right.[/tex]

[tex]\left \{ {{(408 + B) +B=472} \atop {A=408+B}} \right.[/tex]

[tex]\left \{ {{408+2B=472} \atop A=408+B}} \right.[/tex]

[tex]\left \{ {{B=32} \atop {A=408+32}} \right.[/tex]

[tex]\left \{ {{B=32} \atop {A=440}} \right.[/tex]

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