Question

Find the cost of 200grams of flour at $6 per kilogram

Answer 1

Flour =6$/kg.
200gram= 200/1000= 0.2kg.
So price= 0.2×6 = 1.2$.
Hope it helps.

Answer 2

as 1 kg = 6

then 1000 gram= 6

1 gram = 6/1000

200 gram = 6*200/1000

200 gram = 1200/1000

200 gram of flour can be purchased for $1.2