SOLUTION: When it is 1/5 full of water (by weight) a jug weights 560 grams. When it is 4/5 full, the jug weights 740 grams. What does the jug weigh in grams when it is empty can you pleas

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Question 859073: When it is 1/5 full of water (by weight) a jug weights 560 grams. When it is 4/5 full, the jug weights 740 grams. What does the jug weigh in grams when it is empty
can you please ans me urgent

Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
Let j = the mass of the jug in grams.
Difference between 1/5 full and 4/5 full is |560-740| grams.
That is 3/5 of capacity is 180 grams. Proportioned to full 5/5 of capacity, %285%2F3%29180=300 grams.

Taking either of the given quantities, here trying 1/5 full, j%2B%281%2F5%29300=560; solve this for j.