Page 120 - NUMINO Challenge_C2
P. 120
Problem solving
1 A train is traveling at a certain speed. It takes the Key Points
train 7 seconds to travel 80 m, and 4 seconds to
completely cross a 56-m long bridge. How far does How far does the
this train travel in 1 second? train travel in 3
seconds?
2 A train travels 12 m in 1 second. It takes 25 For the train to
seconds for this train to completely cross a completely cross the
bridge. If the train is 85 m long, find the length of bridge, the train
the bridge. must travel as far as
the length of the
bridge plus the
length of the train.
117Communication
1 A train is traveling at a certain speed. It takes the Key Points
train 7 seconds to travel 80 m, and 4 seconds to
completely cross a 56-m long bridge. How far does How far does the
this train travel in 1 second? train travel in 3
seconds?
2 A train travels 12 m in 1 second. It takes 25 For the train to
seconds for this train to completely cross a completely cross the
bridge. If the train is 85 m long, find the length of bridge, the train
the bridge. must travel as far as
the length of the
bridge plus the
length of the train.
117Communication
