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標題:
Application of simple eqution (簡單應用方程式) 第2part !!
發問:
唔識列式呀>< !! 可唔可以列d式比我呀 ? 有答案 , 但係唔識列式 !!! help~~~~有10點呀 !!(6)Peter has $72 and Mary has $12. How much money must Peter give to Mary so that Mary will have 3 yimes as much as Peter ? (答案係$51)(7)The price of an apple increases by $0.25 . Now it costs $4 more to buy 32 apples than to buy 36 apples... 顯示更多 唔識列式呀>< !! 可唔可以列d式比我呀 ? 有答案 , 但係唔識列式 !!! help~~~~有10點呀 !! (6)Peter has $72 and Mary has $12. How much money must Peter give to Mary so that Mary will have 3 yimes as much as Peter ? (答案係$51) (7)The price of an apple increases by $0.25 . Now it costs $4 more to buy 32 apples than to buy 36 apples before the increase . Find the original price of an apple ? (答案係$1)
最佳解答:
Let x be the $ Peter must give to Mary, 3( 72-x) = 12+x 216-3x=12+x 204=4x x=$51 Let y be the original price of an apple, 32( x + 0.25)-4= 36 32x+ 8-4=36 32x= 32 x=$1 你是S.1的??? 這二題我之前都做過 2007-05-27 13:28:00 補充： Sor, 第二題let 錯左....你用返x 啦=,=
其他解答:
Application of simple eqution (簡單應用方程式) 第2part !!
發問:
唔識列式呀>< !! 可唔可以列d式比我呀 ? 有答案 , 但係唔識列式 !!! help~~~~有10點呀 !!(6)Peter has $72 and Mary has $12. How much money must Peter give to Mary so that Mary will have 3 yimes as much as Peter ? (答案係$51)(7)The price of an apple increases by $0.25 . Now it costs $4 more to buy 32 apples than to buy 36 apples... 顯示更多 唔識列式呀>< !! 可唔可以列d式比我呀 ? 有答案 , 但係唔識列式 !!! help~~~~有10點呀 !! (6)Peter has $72 and Mary has $12. How much money must Peter give to Mary so that Mary will have 3 yimes as much as Peter ? (答案係$51) (7)The price of an apple increases by $0.25 . Now it costs $4 more to buy 32 apples than to buy 36 apples before the increase . Find the original price of an apple ? (答案係$1)
最佳解答:
Let x be the $ Peter must give to Mary, 3( 72-x) = 12+x 216-3x=12+x 204=4x x=$51 Let y be the original price of an apple, 32( x + 0.25)-4= 36 32x+ 8-4=36 32x= 32 x=$1 你是S.1的??? 這二題我之前都做過 2007-05-27 13:28:00 補充： Sor, 第二題let 錯左....你用返x 啦=,=
其他解答:
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