Train tons

The entire loaded train weighs 760 tons. It has 30 wagons, each carrying 12 tons of grain and empty, weighing 10 tons. What is the weight of the locomotive?

Correct answer:

l =  100 t

Step-by-step explanation:

m=760 t n=30 w=12+10=22 t  l=mn w=76030 22=100 t

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