SOLUTION: Please help me write an appropriate and interesting word sum for 1500 and 300. Solve it

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Question 1206385: Please help me write an appropriate and interesting word sum for 1500 and 300. Solve it
Found 3 solutions by josgarithmetic, mccravyedwin, ikleyn:
Answer by josgarithmetic(39631) About Me  (Show Source):
You can put this solution on YOUR website!
Not precise enough!

Answer by mccravyedwin(409) About Me  (Show Source):
You can put this solution on YOUR website!

A female chemist mixes 1500 ccs of an 8% solution with 300 ccs 
of a 2% solution.  What percent solution is her mixture?

1500%280.08%29%2B300%280.02%29+=+1800x
120%2B6=1800x
126=1800x
126%2F1800=x
0.07=x

Answer: a 7% solution.

Edwin

Answer by ikleyn(52925) About Me  (Show Source):
You can put this solution on YOUR website!
.

There were 1500 birds on the tree.
300 birds arrived.
How many birds are there on the tree now?


There were 1500 birds swimming on the lake.
300 birds arrived.
How many birds are there swimming on the lake now?


Problems of this kind were popular in my 1-st grade.