Question

19. The cost of an article is first increased by 20%
and then decreased by 30%, find the
percentage change in the cost of the article.​

Answer 1

Step-by-step explanation:

incresed by 20%

so total cost became 120%

then cost decreased by 30%

so total cost became 90%

so percentage chenge is that

the cost has been decreased by 10% indicating a loss of 10%