document.write( "Question 1173427: Nii went into a supermarket to buy some fruit. There were three packs on special offer:\r
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document.write( "1) Ten grapes and five strawberries: 700 RWF (save 100 RWF)\r
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document.write( "2) Ten strawberries and ten apricots: 2000 RWF (save 400 RWF)\r
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document.write( "3) Thirty grapes: 1000 RWF (save 200RWF)\r
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document.write( "What would be the full price of one grape, one strawberry and one apricot at normal price (no special offers)?\r
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document.write( "Enter your answers as the whole number in the blank spaces.\r
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document.write( "Full price of one grape is________
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document.write( " RWF.\r
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document.write( "Full price of one strawberry is________
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document.write( " RWF\r
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document.write( "Full price of one apricot is ________
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document.write( " RWF \n" );
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Algebra.Com's Answer #798938 by mila nedic(19)![]() ![]() You can put this solution on YOUR website! Let's say that g=grape, s=strawberry, a=apricot.\r \n" ); document.write( "\n" ); document.write( "1) 10g+5s=700+100 (because we are looking for the original price not the offer \n" ); document.write( " price so we add the discount) \n" ); document.write( " =800 RWF\r \n" ); document.write( "\n" ); document.write( "2) 10s+10a=2000+400 (we add the discount to the price again) \n" ); document.write( " =2400 RWF\r \n" ); document.write( "\n" ); document.write( "3) 30g=1000+200 (discount price added to discount) \n" ); document.write( " =1200 RWD (from here we can use simple algebra to find g)\r \n" ); document.write( "\n" ); document.write( " 30g=1200 RWD \n" ); document.write( " g=40 RWD (we divided each side by 30 to isolate g)\r \n" ); document.write( "\n" ); document.write( "Now that we have g=40 RWD we can figure out the rest using g:\r \n" ); document.write( "\n" ); document.write( "1) 10g+5s=700+100 \n" ); document.write( " =800 \n" ); document.write( " 10*40+5s=800 (we input 40 instead of g so now we can find s) \n" ); document.write( " 5s=400 (subtract 10*40 or 400 from each side) \n" ); document.write( " s=80 RWF(divide each side by 5 to isolate s and we get the value for s)\r \n" ); document.write( "\n" ); document.write( "We can now use s to find a: \n" ); document.write( "2) 10s+10a=2000+400 \n" ); document.write( " =2400 RWF \n" ); document.write( " 10*80+10a=2400 (replace s with its value of 80) \n" ); document.write( " 10a=1600 (subtract 10*80 or 800 from each side to isolate 10a) \n" ); document.write( " a=160 RWF (divide each side by 10 to isolate a and we get its value)\r \n" ); document.write( "\n" ); document.write( "So now we have the full price of each fruit: \n" ); document.write( "grape=40 RWF \n" ); document.write( "strawberry=80 RWF \n" ); document.write( "apricot=160 RWF \n" ); document.write( " |