Level:
Project ID:
1003090508
Accepted:
1
Clonable:
0
Easy:
0
A factory is supplied with raw materials by rail. Due to the renovation of the track, the time of passing the goods from the warehouse to the factory increased by \( 25\% \). How much did the average speed of carriage on the delivery route decrease?
by \( 20\% \)
by \( 25\% \)
by \( 4\% \)
by \( 75\% \)