SOLUTION: A goldsmith needs 150 grams of Gold alloys of 80% pure gold. Only two alloys of gold are available, the first being 90% pure gold and the other is 70% pure gold. How many grams of

Question 1187626: A goldsmith needs 150 grams of Gold alloys of 80% pure gold. Only two alloys of gold are available, the first being 90% pure gold and the other is 70% pure gold. How many grams of 85% pure gold must be used to suit the requirement?
Found 2 solutions by josgarithmetic, ikleyn:
Answer by josgarithmetic(39618)   (Show Source): You can put this solution on YOUR website!
One of the values in the description or the question is off.

If the two AVAILABLE alloys are 90% Gold and 70% Gold, and the goldsmith wants 150 grams of 80% alloy then this is exactly in the middle of the two alloys available.

75 grams of each available alloy will give him the desired 80% alloy.
Answer by ikleyn(52788)   (Show Source): You can put this solution on YOUR website!
.
A goldsmith needs 150 grams of Gold alloys of 80% pure gold. Only two alloys of gold are available,
the first being 90% pure gold and the other is 70% pure gold. How many grams of 85% pure gold must be used to suit the requirement
~~~~~~~~~~~~~~~~

As your post is worded and printed, the problem is posed   I N C O R R E C T L Y : its different parts are INCONSISTENT.

Read your post attentively.

Find your error.

Fix your error.

Then re-post to the forum.

PLEASE do not post it to me personally.

Do not forget to post your " THANKS " to me for pointing your error.

/////////////

Ignore the post of @josgarithmetic, since it is INCORRECT and IRRELEVANT.

This person produces the noise and errors ONLY at this forum, without any useful output.

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