— It shouldn’t take long to clear up after the party if we all volunteer to help. 

— That’s right. __________.

A．Many hands make light work

B．Something is better than nothing

C．The more the merrier

D．The sooner begun, the sooner done

某人乘坐出租车在平直的公路上行驶，如图是他乘车到达目的地时的车费发票，求：

（1）出租车行驶共用的时间？

（2）出租车行驶的平均速度？