Exercise 4

Lady Ingrid, a locomotive

More on water

If Lady Ingrid was one of the huge locomotives which used to pull express trains on main lines, she would use an incredible 140 litres of water every minute! This would mean that her tank would run dry in less than 43 minutes!

Main-line locomotives carried water in a tender.
They could carry enough water for long journeys which would last several hours.
They also carried coal in the tender.

Can you see which of these tables is correct where 140 litres are used per minute?

table 1
time 1 minute 2 minutes 3 minutes 6 minutes 1 hour
water used (litres) 140 280 420 840 8400
table 2
time 1 minute 2 minutes 3 minutes 6 minutes 1 hour
water used (litres) 140 280 420 560 5600
table 3
time 1 minute 2 minutes 3 minutes 6 minutes 1 hour
water used (litres) 140 280 440 840 8400

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