SOLUTION: Two boxes contained 155 lb of flour. If you take 20 lb from the first and add it to the second, the first box will contain 12/19 of what is now in the second. What amount of flour
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Question 1134419: Two boxes contained 155 lb of flour. If you take 20 lb from the first and add it to the second, the first box will contain 12/19 of what is now in the second. What amount of flour was originally in each box? Found 2 solutions by josgarithmetic, ikleyn:Answer by josgarithmetic(39616) (Show Source):
You can solve it MENTALLY, without using equations.
After exchange, the total mass of 155 lb consists of 12 + 19 = 31 equal parts.
Each part is then = 5 lb.
So, after exchange, there are 12*5 = 60 lb in the first box and 19*5 = 95 lb in the second box.
Hence, BEFORE exchange, there were 60+20 = 80 lb in the first box and 95-20 = 75 lb in the second box. ANSWER
Solved.
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