有个问题

yunhaoll

A manufacturer produced x percent more video cameras in 1994 than in 1993 and y percent more video cameras in 1995 than in 1994. If manufacturer produced 1000 video cameras in 1993, how many video cameras did the manufacturer produce 1995

1 xy=20

2 x+y+xy/100=9.2

 

Answer: B

 

我觉得应该选C亚

依然jmy

lz仔细算一下就知道了

1995年生产的video cameras是1000(1+x%)(1+y%)=1000*(1+(x+y)%+x%y%)=1000*(1+(x+y+xy/100)/100)=1000*(1+9.2/100)=1092

只需要第二个条件就可以算出