Question

If 6 container lorries can transport 135 tonnes of goods in 5 days, how many more lorries
are required to transport 180 tonnes of goods in 4 days?​

Answer 1

Answer:

4 lorries

Step-by-step explanation:

If 6 container lorries can transport 135 tonnes of goods in 5 days

Then, in one day, the 6 container lorries can transport 135/5= 27 tonnes

Which implies that in one day, one container lorry can transport  27/6= 4.5 tonnes.

If 180 tonnes is to be transported in 4 days, then in each day  180/4= 45 tonnes will be transported.

If 1 lorry transports 4.5 tonnes in a day,

then, the number of lorries required to transport 45 tonnes in a day is  45/4.5=10 container lorries.

There are already 6 lorries in operation, therefore, the number of additional lorries required is 10-6=4