Locomotive

The whole loaded train weighs 760 tons. It has twenty wagons, each carrying 20 tons of grain and empty weighs 10 tons. How much weight a locomotive?

Correct answer:

x =  160 t

Step-by-step explanation:

a=20+10=30 t x=760−20⋅ a=760−20⋅ 30=160 t

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