Question

if 20 articles cost 90 , find the cost of 9 articles

Answer 1

Cost of 20 articles=90
Cost of 1 article=90/20=4.5
Cost of 9 articles=4.5×9=40.5

Answer 2

Hey mate

Here's your answer

Cost of 20 articles
= 90 Rs

Cost of 1 article
= 90 / 20
= 4.5 Rs


Cost of 9 articles
= 9 X 4.5
= 40.5 Rs

Hope this helps you

plz mark me as brainliest