Question

question on direct & inverse proportions:
16 tractors used for 7 hrs a day can plough a field in 48 days. In how many days will 14 tractors plough the same field if used for 12 hrs a day?
(using formulae like xy=k, pls!)

Answer 1

Answer:

inverse proportion

16×7=14×12

16×7/14×12

112/168=96 days