標題:
這題數點計呢
發問:
There are 3 more girls than boys in Tom's class, and the sum of girls and the boys is 41. How many boys and girls are there each?(1) If the number of boys is X, the number of girls is ( X + ( ) ) . [Sol] X + [ X + ( ) ] = 41 (2) If the number of girls is X, the number of boys if [ ( ) ]. ... 顯示更多 There are 3 more girls than boys in Tom's class, and the sum of girls and the boys is 41. How many boys and girls are there each? (1) If the number of boys is X, the number of girls is ( X + ( ) ) . [Sol] X + [ X + ( ) ] = 41 (2) If the number of girls is X, the number of boys if [ ( ) ]. [Sol] X + [ ( ) ] = 41 請幫忙 謝謝 更新: 每題有幾多個 boys and girls
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最佳解答:
(1) If the number of boys is X, the number of girls is ( X + (3 ) ) . [Sol] X + [ X + (3 ) ] = 41 2X+3=41 2X=38 X=19 (2) If the number of girls is X, the number of boys if [ (X-3 ) ]. [Sol] X + [ ( X-3) ] = 41 2X-3=41 2X=44 X=22 2007-08-14 13:48:00 補充： 19boys 22girls
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