Question

6 metres of cloth costs $21 . 12. find the cost of 8.5 m of cloth.

Answer 1

6 m of cloth costs 21.12 dollars
then 1 m of cloth costs 21.12/6 = 3.52
so, if 1 m of cloth costs 3.52 dollars
then 8.5 m of cloth costs 8.5×3.52 = 29.92 dollars.
the process used here is the unitary method

Answer 2

Answer

29.92

Step by step expletion

Cost of one metre cloth=21.12/6=3.52

Cost of 8.5metres cloth=3.52*8.5=29.92