修一条水渠,已修了4天,平均每天修35米,已修的比剩下的多全长的40%,这条水渠全长多少米?
解:设这条水渠全长为x米。
[(1-40%)÷2+40%]x=35×4,x=200
中山到广州的公路大约长110千米.小汽车从中山到广州行驶了2小时,平均每小时行驶多少千米?
I should very much like to have gone to the party, but ______.
A.I'm not invited
B.I won't be among the invited
C.they won't invite me
D.they didn't invite me