Question

If cost of plastic is 90 Rupees per kg, then find the cost of 20 gram with explanation. ​

Answer 1

1kg=1000g

1000g=90rs

1g=90/1000

=0.09rs

20g=0.09*20

=1.80rs

Answer 2

Answer:

cost of 1kg plastic=RS. 90

cost of 1000 gram plastic=RS. 90

cost of 1 gram plastic=90÷1000=0.09