document.write( "Question 1055137: the price of a coffee has increased by 25% . what percentage of coffee consumption is to be decreased , so that there would be no increase in the expenditure for a household?
\n" ); document.write( "answer is 20% ,but how?
\n" ); document.write( "

Algebra.Com's Answer #670337 by KMST(5328)\"\" \"About 
You can put this solution on YOUR website!
If it used to cost 100 whatevers to buy 100 packs,
\n" ); document.write( "at 1 whatever per pack, as the price increases by 25%,
\n" ); document.write( "to 1.25 per pack, the same 100 whatevers coffee budget will buy just
\n" ); document.write( "\"100%2F1.25=80\" packs, a decrease of
\n" ); document.write( "\"%28100-80%29%2F100=20%2F100=%2220%25%22\"
\n" ); document.write( "in the coffee amount you can buy.
\n" ); document.write( "
\n" );