In a certain truck,there are 6 times as many crates as barrels.if the weight of each barrel is 9 times the weight of each crate and the total weight of the barrels is 1200 kg, what is the total combined weight,in kilograms,of all the crates and barrels in the truck?
A)1500 b) 1800 c) 2000 d) 2400 e) 3000

See my answer to this one on the Tumblr Q&A page.

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